Providing an electronic marketplace to facilitate human performance of programmatically submitted tasks

ABSTRACT

A method, system, and computer-readable medium is described for facilitating interactions between task requesters who have tasks that are available to be performed and task performers who are available to perform tasks. In some situations, the tasks to be performed are human performance tasks that use cognitive and other mental skills of human task performers, such as to employ judgment, perception and/or reasoning skills of the human task performers. In addition, in some situations the available tasks are submitted by human task requesters via application programs that programmatically invoke one or more application program interfaces of an electronic marketplace in order to request that the tasks be performed and to receive corresponding results of task performance in a programmatic manner, so that an ensemble of unrelated human agents can interact with the electronic marketplace to collectively perform a wide variety and large number of tasks.

TECHNICAL FIELD

The following disclosure relates generally to facilitating interactionsbetween computing systems, and more particularly to facilitating suchinteractions to enable performance by humans of tasks whose performanceis programmatically requested, such as for tasks that are supplied byapplication programs via programmatic invocations to an electronicmarketplace in order to receive results from the performance of thetasks.

BACKGROUND

Distributed computing systems are known in which multiple computersystems interact in order to achieve a goal. It is often desirable foran application program on a computer system to interact with remotesystems and applications in order to obtain various types of informationand functionality that are not part of the application program. Byperforming such interactions, an application program may be able toleverage information and functionality from vast numbers of othercomputer systems over the Internet or other networks.

In order to enable such interactions between remote computer systems andapplication programs, various programmatic interaction mechanisms havebeen developed. For example, remote procedure call (“RPC”) protocolshave long existed that allow a program on one computer to cause aprogram on another computer to be executed, and various object-orientedarchitectures such as CORBA (“Common Object Request BrokerArchitecture”) and DCOM (“Distributed Component Object Model”) providesimilar capabilities. In addition, a variety of middleware programs havebeen implemented to connect separate applications (often of distincttypes and from unrelated sources) to allow communication. For example,various EDI (“Electronic Data Interchange”) networks exist that providestandard mechanisms to allow a computer system of one user of thenetwork to send data to a computer system of another user of thenetwork.

The widespread popularity of the World Wide Web (“Web”) has providedadditional opportunities for computers to inter-communicate. Forexample, much current Web use involves users interactively requestingWeb pages from Web servers (e.g., via executing Web browser applicationsof the users) and receiving the requested information in response. Inaddition to such interactive user specification of requestedinformation, there is also growing use of the Web to provide so-called“Web services,” which typically involve the programmatic interaction ofremote applications to exchange information via defined APIs(“application program interfaces”), or the like. Web services may allowheterogeneous applications and computers to interact, and can be definedand implemented using a variety of underlying protocols and techniques.For example, some Web service implementations return data in XML(“eXtensible Markup Language”) format using HTTP (“HyperText TransportProtocol”) in response to a Web service invocation request specified asa URI (“Uniform Resource Identifier”), such as a URL (“Uniform ResourceLocator”) that includes a specified operation and one or more queryparameters. In other implementations, additional underlying protocolsare used for various purposes, such as SOAP (“Simple Object AccessProtocol”) for standard message exchange, WSDL (“Web ServicesDescription Language”) for description of service invocations, and UDDI(“Universal Description, Discovery, and Integration service”) fordiscovery of available services.

Unfortunately, while Web services and other programmatic interactionmechanisms allow various application programs and computers to interact,such interactions are typically limited in various ways. For example,the types of information and functionality that are available to berequested using such programmatic interactions are typically restrictedto very limited types of requests that the remote computer systems andapplications can automatically fulfill (e.g., to provide a specifiedpredefined group of information, such as a Web page or file, or toperform a specified database query on a specified database).

However, while such types of programmatic requests can be useful, thereis a very large class of tasks which computers and application programscannot easily automatically perform, but which humans can typicallyeasily perform, referred to herein as “human performance tasks.” This isdue at least in part to various cognitive and other mental capabilitiesof humans that are not easily encoded in automated programs, such as theability to use human judgment to form opinions, to perform abstract orcommon-sense reasoning, to perform various discernment and perceptiontasks (e.g., visual and aural pattern recognition, such as based onexperience), to use cultural awareness and emotional intelligence, andto perform various other everyday yet highly complex kinds ofperception, cognition, reasoning and thinking.

One example of such a human performance task is identifying obscenecontent—in particular, despite the ability of a human observer totypically identify obscene content very rapidly based on a cursoryreview, automated techniques are largely unable to accurately identifymost such content. In a similar manner, Justice Potter Stewart famouslysaid of pornography that he could not explain exactly what it was, but“I know it when I see it,” and the Supreme Court of Justice Stewart'sera went on to establish a legal test for pornography that incorporatessubjective community standards. Today, despite much effort intodeveloping automated pornography and other content filters, no one hasyet figured out a way to make a computer that really “knows it when itsees it.”

Thus, given the existing limitations regarding automated performance oftasks, it would be beneficial to provide a solution that enablesapplication programs to programmatically request that such tasks beperformed and to receive programmatic responses with results of taskperformance, as well as that addresses other related problems.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a network diagram illustrating interactions and informationflow for an example embodiment of the described electronic marketplacefor human performance tasks.

FIG. 1B is a block diagram illustrating an example embodiment of asystem for providing the described electronic marketplace.

FIGS. 2A-2G illustrate examples of programmatic messages used tointeract with an example embodiment of the described electronicmarketplace.

FIG. 3 is a block diagram illustrating a computing system suitable forexecuting an embodiment of a system for providing the describedelectronic marketplace.

FIGS. 4A and 4B are a flow diagram of an embodiment of Task FulfillmentFacilitator routine.

FIG. 5 is a flow diagram of an embodiment of a Qualification Managerroutine.

FIG. 6 is a flow diagram of an embodiment of an InformationCorroboration Manager routine.

FIG. 7 is a flow diagram of an embodiment of an Activity Trackerroutine.

FIG. 8 is a flow diagram of an embodiment of an Automated Matcherroutine.

FIG. 9 is a flow diagram of an embodiment of a Task Submission Receiverroutine.

FIG. 10 is a flow diagram of an embodiment of a Task InteractionController Type Definer routine.

FIG. 11 is a flow diagram of an embodiment of a Task InteractionController routine.

FIGS. 12A-12J illustrate examples of using multiple types of userinteraction processing to control performance of a task by a taskperformer in an example embodiment of the described electronicmarketplace.

FIG. 13 is a block diagram illustrating an example system for providingan embodiment of the described electronic marketplace.

DETAILED DESCRIPTION

A software facility is described that facilitates interactions betweentask requesters who have tasks that are available to be performed andtask performers who are available to perform tasks. In at least someembodiments, the tasks to be performed are cognitive human performancetasks that use cognitive and other mental skills of human taskperformers, such as to employ judgment, perception and/or reasoningskills of the human task performers. In addition, in at least someembodiments an intermediary electronic marketplace is provided thatallows task requester users and task performer users to programmaticallyand/or interactively engage in task-related transactions and to performvarious other activities related to performance of tasks.

In particular, in some embodiments one or more computing systemsproviding the electronic marketplace act as an intermediary to allowtask requesters to programmatically request (e.g., via programmaticinvocations of one or more APIs of the electronic marketplace byapplication programs of the task requesters) that tasks be performed byhuman task performers and to receive corresponding results after thetasks are performed (e.g., as responses to the programmaticinvocations). Similarly, human task performers can access the electronicmarketplace (e.g., in a programmatic or interactive manner) to obtaininformation about available tasks that they can perform and to providethe results of task performance after the completion of tasks that theyare assigned. By enabling large numbers of unaffiliated or otherwiseunrelated task requesters and task performers to interact via theintermediary electronic marketplace in this manner, free-marketmechanisms mediated by the Internet or other public computer networkscan be used to programmatically harness the collective intelligence ofan ensemble of unrelated human task performers.

The electronic marketplace further performs a variety of additionalactivities to facilitate the performance of tasks. For example, theelectronic marketplace may track the progression of the tasks throughvarious states (e.g., an “open” state for tasks that are available to beperformed, an “assigned” state for each assignment of a task to one ormore task performers, a “completed” state for an assignment after thetask performer provides the results of performance of the task, etc.),and may further take various actions corresponding to the tasks. Inaddition, in some embodiments a task requester user may impose variouscriteria regarding performance of a task (e.g., required and/orpreferred qualifications for task performers, time limits for taskcompletion, etc.) and/or may specify various actions associated withtask performance (e.g., payment of a specified fee under specifiedconditions), and if so the electronic marketplace may enforce thosecriteria and initiate those actions as appropriate for the task.Similarly, task performer users may specify various actions related totasks, such as to request that information about available tasks and/orabout other users be provided in various ways (e.g., to be notified whenspecified types of tasks become available), and if so the electronicmarketplace may similarly initiate those actions as appropriate.

In some embodiments, the electronic marketplace further provides avariety of types of functionality related to obtaining and usinginformation about qualifications and other attributes of task performerusers and/or task requester users, such as to allow users to identifyand/or specify types of users with whom to conduct transactions. Forexample, the electronic marketplace may track various information aboutactivities by task performer users and/or task requester users in someembodiments, such as to automatically generate quantitative measurementsof actions taken by the users that may be used as qualifications (e.g.,activities related to prior task performance). More generally, in someembodiments the electronic marketplace may support user qualificationsof various types (e.g., qualifications for a user that are asserted bythat user, that are specified by one or more other users, and/or thatare automatically generated by the electronic marketplace). Furthermore,in some embodiments the electronic marketplace provides functionality toauthenticate or otherwise corroborate information about users (e.g.,users' qualifications, identities, non-qualification attributes, etc.),such as based on obtained evidence that supports that information, andmay then use such corroborated information in various ways.Functionality provided by the electronic marketplace related toqualifications and corroboration of user information is discussed ingreater detail below.

Interactions between the electronic marketplace and users of themarketplace can occur in a variety of ways. As previously noted, in someembodiments task requesters interact with the electronic marketplace ina programmatic manner, such as by invoking defined APIs of themarketplace (e.g., APIs based on Web services provided by the electronicmarketplace) to send messages that request or supply information. Thedefined APIs may allow the task requesters to not only submit tasks thatare available to be performed, but also to perform various other actionswith respect to previously submitted tasks (e.g., check on the status ofpending tasks, modify information about pending tasks, submitinstructions regarding handling of pending tasks, and interactivelyobtain results for completed tasks). In addition, the defined APIs mayallow task requesters to further perform various other types ofinteractions with the electronic marketplace, such as searching forand/or browsing for information of interest (e.g., to identify availabletask performers having specified qualifications or attributes, or toidentify information about tasks submitted by other task requesters),supplying qualification information for themselves and/or for taskperformers, etc. In addition, while in some embodiments allcommunications between task requesters and task performers occur via theelectronic marketplace, in other embodiments at least somecommunications may occur directly between a task requester and a taskperformer (e.g., to allow a task performer to obtain information from atask requester regarding a task to be performed, to allow a taskperformer to provide task results information to a task requester for atask that has been performed, etc.) or more generally between any two ormore users, such as after the electronic marketplace facilitates thatdirect communication (e.g., by providing appropriate contact or othercommunication-related information to at least one of the parties to thecommunication).

In situations in which a final response is not immediately available toa programmatically supplied message (e.g., a final response thatincludes results from performing a task that is submitted with themessage), the electronic marketplace may in some embodiments provide animmediate response that acknowledges receipt of the message (e.g., byproviding a unique task identifier for a task being submitted), and maylater provide one or more additional related electronic communications(e.g., to provide the results from performing a task to the taskrequester who submitted the task). Such additional electroniccommunications can be performed in a variety of ways, such as byinitiating a new electronic message (e.g., email, instant messaging,etc.), by using a callback mechanism supplied along with the originalmessage, etc.

In at least some embodiments, the electronic marketplace may alsoprovide an interactive console that allows task requesters tointeractively perform some or all of the various types of actionspreviously noted, whether instead of or in addition to a programmaticinterface that is provided for those actions. For example, in someembodiments the interactive console functionality may be accessed by atask requester user via a Web browser that interacts with a Web serverfor the electronic marketplace (e.g., by supplying appropriateinformation in a form on a Web page from the electronic marketplace).

In a similar manner, task performer users may interact with theelectronic marketplace in a variety of ways in order to identifyavailable tasks of interest and to perform such tasks, whether in aprogrammatic and/or interactive manner. More generally, task performerusers may similarly perform a variety of types of actions with respectto the electronic marketplace, including searching for and/or browsingfor available tasks for which they are qualified, searching for and/orbrowsing for tasks from task requesters who have specified attributes,supplying qualification information, requesting assignments foravailable tasks of interest, supplying results from performance of tasksto which they have been assigned, requesting notifications oflater-submitted tasks for which they are qualified, providing varioustypes of preference information, etc. Additional details regardingspecific types of interactions with the electronic marketplace by taskrequester and task performer users are discussed in greater detailelsewhere.

FIG. 1A provides a high-level overview of types of interactions by taskperformers and task requesters in one example embodiment. In particular,a Task Fulfillment Facilitator (“TFF”) system 130 is operating in thisexample embodiment to facilitate task-related interactions, such as byproviding an electronic marketplace for cognitive human performancetasks and/or other types of human performance tasks. In this exampleembodiment, the TFF system provides an API 135 for programmaticinteractions with users, and an interactive console interface 140 isalso available for interactive communications. The TFF system may beimplemented in various ways in various embodiments, such as a softwaresystem executing on one or more computing systems or devices (e.g., in adistributed manner, such as on a peer-to-peer or grid network).

In particular, in this example a variety of human task requester users105 are each interacting with one or more application programs torequest that tasks be performed by registering or otherwise submittingthe tasks to the TFF system, as well as to perform various otherinteractions with the TFF system. To submit the tasks or perform otherinteractions, the application programs each programmatically invoke 180a one or more Web services (“WSes”) that are part of TFF system's API135 a in this example embodiment. As discussed in greater detailelsewhere, each of the task requests may include a variety ofinformation about the task to be performed, including one or morequalifications needed by any human task performer who performs thetasks, one or more other criteria related to task performance (e.g.,deadlines for completion and requirements for the format of results fromthe task performance), and one or more associated fees to be provided tothe human task performers who successfully perform the task.

Similarly, in the illustrated embodiment other task requester users 110submit available tasks and perform other interactions with the TFFsystem in an interactive manner via Web browser programs thatcommunicate 180 b information supplied by the users to an interactiveconsole 140 a, with the console then interacting with the API 135 a ofthe TFF system in a manner similar to that of the interactions 180 a bythe application programs. In the illustrated embodiment, the console isprovided as part of the TFF system (whether on the same or differentcomputing systems used for other parts of the TFF system), such as basedon one or more Web pages provided by a Web server of the TFF system. Inother embodiments, however, one or more such consoles or othermechanisms to interact with the TFF system may instead by providedexternally to the TFF system, such as by third parties (whether insteadof or in addition to any console(s) provided by the TFF system). Afterreceiving the information for the available tasks being submitted viathe API 135 a, the TFF system stores information 145 about the availabletasks for use by task performers. While not illustrated here, some taskrequester users may be part of both group 105 and group 110 byinteracting with the TFF system in both programmatic and interactivemanners, such as at different times and/or for different purposes.

FIG. 1A also illustrates various human task performer users who interactwith the electronic marketplace to perform available tasks. Inparticular, in this example various task performer users 120 eachinteract with a Web browser program that communicates 185 b with aninteractive console 140 b of the TFF system, such as to identify tasksthat are currently available for which they are qualified and to provideinformation about results of performance of tasks to which they havebeen assigned. As with console 140 a, console 140 b then interacts withan API 135 b of the TFF system to provide information supplied by thetask performer users to the TFF system. In this illustrated embodiment,other task performer users 115 instead directly interactprogrammatically with the TFF system via API 135 b in order to performactivities related to task performance, such as by each using one ormore application programs that programmatically invoke 185 a appropriateWeb services that are part of the API 135 b. While illustratedseparately in this example, consoles 140 a and 140 b may in someembodiments be part of a single console provided by the TFF system, andthe APIs 135 a and 135 b of the TFF system may similarly each beportions of a single API 135 for the system. In addition, while notillustrated here, some task performer users may be part of both group115 and group 120 by interacting with the TFF system in bothprogrammatic and interactive manners, such as at different times and/orfor different purposes. In addition, some users may serve as both taskrequesters and task performers, such as for different tasks.

Based on the interactions with the human task performers, the TFF systemtracks information about the current status of tasks, such as byupdating information 145 about available tasks, and stores results 150from the performance of tasks that are received via interface 135 b.After a task is performed and corresponding results are received, theTFF system can notify the task requester that supplied that task of theresults in a variety of ways. For example, in some embodiments theresults are provided to task requesters via the interactive console 140a when the task requesters next interact with the console.Alternatively, task performance results may instead be electronicallysent to the task requesters via the API 135 a as a response to a priorinvocation, or may instead be sent to task requesters in any other waythat provides the information to the task requesters in a timely manner(e.g., via email, telephone, fax, postal mail, etc.).

In addition, the TFF system in the illustrated embodiment facilitatesthe exchange of payments between parties to transactions involvingtasks, such as between task requesters and task performers (e.g., toprovide payments to the task performers from the task requesters forsatisfactory performance of submitted tasks). In the illustratedembodiment, the TFF system may include internal payment handlingcapabilities, such as via a payment handling system 190, although inother embodiments the TFF system may instead interact with an externalpayment handling system (whether from the same organization thatprovides the TFF system or instead from a third party) to provide thepayments. In some situations, task performance payments may be madeautomatically after a task is performed (e.g., after automatedverification is performed by the TFF system on received task results toensure that any criteria for the task have been met), while in othersituations the payments may instead be made only after the taskrequester has reviewed and accepted the results (or failed to reject theresults after a specified period of time). In addition, as described ingreater detail elsewhere, a variety of other types of payments may bemade in other situations, such as payments from task performers,payments to or from the TFF system (e.g., for services provided by thesystem), and/or payments to or from one or more third parties.

Moreover, a variety of types of non-monetary compensation (e.g., forperformance of tasks) and other non-monetary rewards may also be used inother embodiments, whether provided by task requesters (e.g., forperformance of submitted tasks), task performers (e.g., for theopportunity to perform tasks), the TFF system (e.g., for specified typesof user activities), and/or third parties to transactions related totask performance. In particular, in some embodiments compensation to oneor more task performers for performance of one or more tasks may includecredit and/or discounts for use at one or more online retailers (e.g., aWeb merchant affiliated with the TFF system), such as to allow thosetask performers to purchase and/or rent goods and services forthemselves and/or for others as gifts. In addition, in some embodimentssuch compensation and/or information about such compensation (e.g., apromise to provide such compensation at a future time when specifiedconditions are satisfied) may also be provided immediately orsubstantially immediately to a task performer or other recipient of thecompensation, such as to allow the recipient to immediately use thecompensation for a retail transaction. In other situations, a reward forperformance of a task may include recognition of the task performer(e.g., by display information about specified activities of the taskperformer and/or a ranking of the task performer relative to other taskperformers), such as a task performed for a task requester that is acharity or that otherwise benefits a charitable cause or otherbeneficial entity or activity.

FIG. 1B illustrates examples of various types of modules andfunctionality for one example embodiment of the TFF system 130. Inparticular, the illustrated embodiment of the TFF system includes amodule 131 that receives requests and information from users via the API135 of the TFF system, and handles the requests and information asappropriate (e.g., by implementing business logic and/or workflowprocessing for a specific embodiment, or by providing or otherwiseproducing requested information, such as to produce information relatedto tasks to be performed and/or related to results of task performance).For example, as tasks are submitted by task requesters via the API, themodule 131 stores information about the available tasks in a database145, and further stores any additional associated information for thetasks (e.g., information to be analyzed or manipulated as part of atask) in a database 146. Information about available tasks may then beprovided to users by the module 131 via the API, such as in response torequests from task performers and/or task requesters that are receivedvia the API (e.g., requests to access information about a specifiedtask, or to search or browse for various tasks). In addition, when taskperformers provide results from performance of tasks via the API, themodule 131 stores the task results information in a database 150, andmay further provide information about the results to users (e.g., thetask requesters that submitted the tasks) as appropriate via the API.

The module 131 may also provide a variety of types of functionalityother than exchanging task and task result information with users. Forexample, the module 131 may receive various types of information aboutusers via the API (e.g., evidence of a user's identity, qualificationinformation for users, payment source and/or repository information fora user, demographic information, user preferences, etc.), such as whenusers initially register with the TFF system to act as task performersand/or task requesters. In the illustrated embodiment, the module 131then stores the user qualification information in database 147 and theother user information in database 148 (although in other embodimentsthe information may be stored in other ways), and may then provide suchinformation to users when appropriate via the API, such as in responseto search and/or browse requests. A variety of other types ofinformation may also be available (e.g., information about users'accounts with the TFF system, aggregate information about groups ofrelated users or all users, information about historical activities ofspecific users and/or groups of users, summary and overview informationabout tasks that have been performed, etc.), and if so the module 131may similarly provide such information to users when appropriate via theAPI.

In the illustrated embodiment, the TFF system further includes variousadditional modules that provide additional types of functionality, suchas to assist the module 131, although in other embodiments some or allof the additional modules and/or additional types of functionality maynot be included, or may be combined together in different manners. Asone example, the illustrated embodiment of the TFF system includes anAccess Control Manager module 136 to assist in controlling access tovarious functionality and stored information, such as based on specificaccess policies specified by users for specific pieces of informationand/or based on default policies of the TFF system. In particular, aftera user's identity and/or other relevant information is determined(whether by the Access Control Manager module, module 131, or otherentity such as an external system affiliated with the TFF system orprovided by a third party), the Access Control Manager module may assistin determining whether the user is allowed to access TFF systeminformation based on that determined user information, with the module131 providing information to users only when they are authorized toreceive it. Access control information can be specified for varioustypes of information in various ways, such as for information aboutusers (e.g., as specified by those users), tasks (e.g., as specified bythe task requesters that submitted the tasks), results of taskperformance (e.g., as specified by the task requesters that submittedthe tasks and/or task performers that performed the tasks), etc.

The illustrated embodiment of the TFF system also includes a UserInteraction Manager module 134 to assist in managing at least some typesof interactions with users. For example, in some embodiments taskrequesters and/or task performers may be allowed to specify preferencesand/or requirements for how certain types of task-related interactionsare to occur, such as to allow a task requester to specify how asubmitted task is to be presented to a task performer and/or how resultsfrom the task performer are to be obtained. In embodiments in which theTFF system includes one or more consoles (not illustrated here) withwhich users interact during the task performance process, the UserInteraction Manager module may further be included with or otherwiseaffiliated with one or more of the consoles to facilitate those userinteractions with the consoles. In addition, while in the illustratedembodiment the User Interaction Manager module operates in conjunctionwith the module 131 to control particular types of interactions in auser-configurable manner, in other embodiments the module 131 mayinstead directly include some or all of the types of functionalityprovided by the User Interaction Manager module.

To facilitate the control of user interactions, the User InteractionManager module in the illustrated embodiment provides various predefinedTask Interaction Control (“TIC”) types (not shown) that each include acombination of multiple types of processing related to task performance,and allows task requesters to specify a TIC type for use with each taskthat is submitted. When a task is later to be performed by a human taskperformer, the User Interaction Manager module then controls theinteractions with the human task performer by performing the types ofprocessing specified by the TIC type associated with the task. The typesof user interaction processing may include, for example, manipulatinginformation associated with a task in a specified manner before it isprovided to a task performer (e.g., to format the information in aspecified manner), providing the manipulated information to the taskperformer in a specified manner (e.g., by invoking an applet or otherfunctionality on a computing system of the task performer that controlsthe display or other presentation of the manipulated task information tothe task performer), obtaining results of task performance from the taskperformer in a specified manner (e.g., as input to a CGI (“CommonGateway Interface”) program), and manipulating obtained task resultsbefore they are provided to the task requester (e.g., to format theinformation in a specified manner). Multiple predefined alternatives maybe provided for each of the types of user interaction processing, andusers may further be allowed to define new TIC types based on specifiedcombinations of predefined alternatives and/or by using new processinginformation supplied by the users. Other information regardingmanagement of task-related interactions with users is discussed ingreater detail elsewhere.

The illustrated embodiment of the TFF system further includes a UserQualification Manager module 133 to assist in specifying qualificationsof users, such as qualifications of task performer users related toperforming tasks and/or qualifications of task requester users relatedto submitting available tasks and to handling results from performanceof tasks. In particular, in the illustrated embodiment the UserQualification Manager module allows users to specify new qualificationtypes, as well as to issue or assert specific qualifications of users ofthose qualification types (or of predefined qualification types inembodiments in which the TFF system provides them). Information aboutuser-specified qualification types and specified user qualifications isthen stored in the illustrated embodiment in database 147, and may beused by task requesters and/or task performers who have access to thatinformation (e.g., to search for users having specified qualifications,to identify preferred or required qualifications for task performers whoperform tasks, to identify preferred or required qualifications for taskrequesters who have submitted tasks, etc.). As discussed in greaterdetail elsewhere, in some embodiments the TFF system may further assistin specifying user qualifications based on numerical assessments ofprior task-related activities by tracking information about theoccurrences of such activities. Other information regardingqualification types and qualifications is discussed in greater detailelsewhere.

The illustrated embodiment of the TFF system also includes a UserInformation Corroboration Manager module 137 to assist in authenticatingor otherwise corroborating information about users, such as identitiesof users, specified qualifications of users, and other types ofattributes of users. In particular, in the illustrated embodiment theUser Corroboration Manager module obtains various information that mayserve as evidence for one or more pieces of information about users,such as from users that supply the evidence via the API to corroborateparticular pieces of user information, and may then use that informationfor corroboration purposes in various ways. For example, in someembodiments corroborative information may be provided to users alongwith the information that it corroborates, such as to allow a recipientto evaluate the corroborative value of that information. Alternatively,in some embodiments and for some types of corroborative information, theInformation Corroboration Manager module may automatically make anassessment of a degree and/or type of corroboration provided by theinformation. After a piece of user information has been sufficientlycorroborated, it can be used in various ways, such as to provideindications to others about the degree or type of corroboration for theinformation, to limit some types of functionality to users who havesufficiently corroborated information (e.g., to require that taskperformers for a task have a sufficiently corroborated qualification, orto limit some types of access to information to users' whose identitieshave been sufficiently corroborated), etc. Other information regardingcorroboration of user information is discussed in greater detailelsewhere.

A Task and User Matching Manager module 132 is also illustrated in theexample embodiment of the TFF system to assist in matching availabletasks to be performed and available task performers who can perform thetasks. The matching of tasks and task performers can be performed atvarious times and in various ways. For example, in some embodiments thematching may be performed in response to requests from task performerusers for tasks that meet specified criteria, with the matching tasksprovided to the task performer users as candidates that they can selectto perform. Alternatively, in some embodiments the matching may beautomatically performed for at least some types of tasks when the tasksare submitted, such as to assist in quickly identifying one or more taskperformers to perform the tasks. In addition, in some embodiments thematching may be performed by matching information about the tasks andthe task performers, such as by identifying task performers havingqualifications that meet or exceed any required qualifications specifiedfor a task. In other embodiments the Matching Manager module may useadditional information (e.g., information about task requesters thatsubmit tasks, preferences of task performers and/or task requesters,preferred but not required criteria specified for tasks, etc.) whenperforming matching and/or perform various additional activities relatedto matching. Other information regarding matching of tasks and taskperformers is discussed in greater detail elsewhere.

The illustrated embodiment of the TFF system further includes severalother modules that provide additional types of functionality to assistoperation of the system. For example, the illustrated embodimentincludes an Activity Tracking Manager module 138 that tracks a varietyof types of activities (e.g., each activity taken by a user with respectto a submitted task) and stores the tracked information in an activitylog database 149. The Activity Tracking Manager module or other part ofthe system can then analyze the logged information to determine varioustypes of aggregate or summary information (e.g., for specific users,groups of users, all users, types of tasks, groups of related tasks,etc.), and make that aggregate or summary information available to usersas appropriate. The illustrated embodiment also includes a NotificationManager module 139 that provides notifications to users as appropriate,such as to notify task performers when new tasks that meet specifiedcriteria become available, to notify task requesters when results ofperformance of their previously submitted tasks are available, etc. Thenotifications can be performed in various ways in various embodiments,such as via a console or programmatic interface of the TFF system, orvia other electronic communication mechanisms (e.g., cellphone, email,instant messaging, etc.). The illustrated embodiment also includes aReward Manager module 142 that tracks information about compensation andother rewards for users based on their activities, such as to maintain afinancial repository for each user for use in providing or receivingmonetary compensation. In addition, the illustrated embodiment includesan Accounting Manager module 141 to perform various administrativefunctions for the system, such as to obtain financial payments or otherreward information from users.

FIG. 3 illustrates a server computing system 300 suitable for executingan embodiment of the TFF system facility that provides an electronicmarketplace for human performance tasks, as well as various taskrequester computing systems 350, task performer computing systems 370,and other computing systems 390. In the illustrated embodiment, theserver computing system 300 includes a CPU 305, various I/O devices 310,storage 320, and memory 330. The I/O devices include a display 311, anetwork connection 312, a computer-readable media drive 313, and otherI/O devices 315.

An embodiment of the TFF system 340 is executing in memory, and itinteracts with the other computing systems over the network 380 usingthe network connection 312 (e.g., via the Internet and/or the World WideWeb). In particular, users of task requester computing systems 350 mayinteract with the TFF system in order to provide information aboutavailable tasks to be performed, such as by using application program359 executing in memory 357 to send stored task information 355 (e.g.,information about the task, any associated criteria, any reward forsuccessful performance, etc.) and related information 356 (e.g.,information to be analyzed by human task performers as part of thetasks) on storage 354. Human task performer users similarly use taskperformer computing systems 370 to interact with the TFF system, such asvia a program 379 (e.g., a Web browser) in memory 377 toprogrammatically or interactively obtain information about availabletasks and provide results information for performed tasks. Wheninformation is received at the computing system 370 about availabletasks, the information is stored in this example embodiment with currenttask information 375 in storage 374 (e.g., temporarily until performanceof the task is completed).

The TFF system and its modules (not shown) may also access and usevarious task-related and user-related information on storage 320 orelsewhere, such as information stored in one or more databases 321. Inaddition, in some embodiments the TFF system may also interact withother optional systems 332 executing in memory 330 and/or other optionalcomputing systems 390 to perform additional related functionality, suchas to perform payment processing in order to provide payments to humantask performers on behalf of task requesters and/or to obtainqualification information from third-party qualification issuingauthorities.

Those skilled in the art will appreciate that computing systems 300,350, 370 and 390 are merely illustrative and are not intended to limitthe scope of the present invention. The TFF system may instead beexecuted by multiple interacting computing systems or devices, andcomputing system 300 may be connected to other devices that are notillustrated, including through one or more networks such as the Internetor via the World Wide Web (“Web”). More generally, a “client” or“server” computing system or device may comprise any combination ofhardware or software that can interact, including (without limitation)desktop or other computers, network devices, PDAs, cellphones, wirelessphones, pagers, electronic organizers, Internet appliances,television-based systems (e.g., using set-top boxes and/orpersonal/digital video recorders), and various other consumer productsthat include appropriate inter-communication capabilities. In addition,the functionality provided by the discussed TFF system modules may insome embodiments be combined in fewer modules or distributed inadditional modules. Similarly, in some embodiments the functionality ofsome of the modules may not be provided as part of the TFF system and/orother additional functionality may be available.

Those skilled in the art will also appreciate that, while various itemsare discussed or illustrated as being stored in memory or on storagewhile being used, these items or portions of them can be transferredbetween memory and other storage devices for purposes of memorymanagement and data integrity. Alternatively, in other embodiments someor all of the software modules and/or components may execute in memoryon another device and communicate with the illustrated computing systemvia inter-computer communication. Some or all of the system modulesand/or data structures may also be stored (e.g., as softwareinstructions or structured data) on a computer-readable medium, such asa hard disk, a memory, a network, or a portable media article to be readby an appropriate drive or via an appropriate connection. The systemmodules and data structures can also be transmitted via generated datasignals (e.g., as part of a carrier wave or other analog or digitalpropagated signal) on a variety of computer-readable transmissionmediums, including wireless-based and wired/cable-based mediums, and cantake a variety of forms (e.g., as part of a single or multiplexed analogsignal, or as multiple discrete digital packets or frames). Suchcomputer program products may also take other forms in otherembodiments. Accordingly, the present invention may be practiced withother computer system configurations.

As previously noted, in at least some embodiments human task requesterssubmit tasks to the electronic marketplace that are available to beperformed by human task performers. The types of tasks that can besubmitted and performed may vary in various embodiments. In particular,in some embodiments the tasks are each cognitive human performance tasksthat use cognitive and/or other mental skills of human task performers,such as to use human judgment capabilities to form an opinion related toone or more subjective bases, to use human discernment and/or perceptionskills to select information (e.g., by analyzing audio and/or videoinformation, such as to perform pattern recognition), to use humanreasoning skills (e.g., based on common-sense reasoning), etc. Moregenerally, in at least some embodiments the tasks to be performed arehuman performance tasks that are selected based on their susceptibilityto performance by humans, whether because automated systems are notcurrently capable of performing the tasks or because human taskperformers can perform the tasks more cheaply, rapidly, and/oraccurately. For example, while automated text translation tools maytranslate text between languages at a limited level of proficiency,human translators with appropriate qualifications may be able to performthe translations with a significantly higher proficiency level. Inaddition, in some embodiments some or all of the tasks include questionsto be answered by the task performers, such as to select from anenumerated set of potential answers or to more generally generate anappropriate answer. The results of task performance can also takevarious forms in various embodiments, including answers to questions, aselection by a task performer of one or more options provided as part ofthe task, a manipulated form of information provided to the taskperformer, a categorization or other analysis of information provided tothe task performer, etc. Additional information regarding tasks and taskresults is discussed elsewhere.

For illustrative purposes, some embodiments are described below in whicha specific form of electronic marketplace provides various specifictypes of capabilities and functionalities with respect to variousspecific types of tasks, and interacts with task requesters and taskperformers in specific types of ways. However, those skilled in the artwill appreciate that the techniques of the invention can be used in awide variety of other situations, including with other types of tasks,with types of programmatic interfaces and/or access mechanisms that donot use Web services, and in situations other than with an electronicmarketplace, and that the invention is not limited to the exemplarydetails provided.

FIGS. 2A-2G illustrate examples of programmatic messages used tointeract with an example embodiment of an electronic marketplace forhuman performance tasks, with the message contents formatted in XML touse various example types of XML tags. In other embodiments, similartypes of information could be formatted in other ways, and a variety ofadditional types of messages may similarly be used to provide othertypes of information and obtain other types of functionality from theelectronic marketplace.

In particular, FIG. 2A illustrates an example of a task submissionmessage that a task requester can programmatically provide to theelectronic marketplace in order to describe a task that is available tobe performed. In this example, the task is of a type identified by thetask requester as being “ImageChoice” (as shown in line 5), such asbased on a previous specification by the task requester of that tasktype or instead based on a predefined type of task provided by theelectronic marketplace. The task in this example involves answering thequestion of which one of 4 specified photographs best shows a specifiedsubject (which in this example is a business in Seattle by the name of“Wildboar Tavern,” as indicated in lines 30-37), with the answer beingthe selected photograph. The task may be, for example, one of thousandsor millions of related tasks for a task requester who is creating adirectory of businesses with associated photographs. As discussed ingreater detail later, FIG. 12A illustrates an alternative example ofencoding task information for a similar type of task.

In this example, the message identifies the task requester in line 2 ofthe message as having an ID of “BarnabyPhoto”, specifies detailsregarding the task in lines 29-44, and specifies information in lines4-28 regarding criteria and other associated information for the task. Averbal description of the task is provided in lines 7-8, an indicationof payment compensation for successful performance of the task isprovided in lines 9-12 (which in this example is 6 cents, to be providedto the task performer after approval of the results of task performanceby the task requester), and an estimate of the time needed to completethe task is indicated in line 13 to be 30 seconds. The message alsoindicates various criteria in lines 17-23 regarding task performers whoare allowed to perform the task, which in this example does not includeany specific qualification criteria (as shown in line 22) or anyspecific task performers who are identified as being allowed to performthe task (as shown in line 18), but does specify one task performer inlines 19-21 who is excluded from performing the task. Timeoutinformation in lines 24-27 indicates that the task will remain open forperformance for 172,800 seconds (or 48 hours), but that an assignment ofthe task to a task performer will be kept open for only 60 secondsbefore the task becomes available to others. The message furtherindicates in lines 39-42 the supplied photographs to be analyzed, and inlines 15-16 indicates an application that will provide functionality forcomparing the images (e.g., by displaying all four photographs alongwith a control for indicating which photograph was selected). Inresponse to submitting this message, the task requester receives amessage (not shown) indicating that the task information was receivedand including a unique task ID of “109234875” that was generated forreferencing the task.

FIG. 2B illustrates an example message that a task requester mayprogrammatically supply to the electronic marketplace in order todetermine the status of various tasks previously submitted by the taskrequester. In this example, the previously discussed task requesterwhose ID is “BarnabyPhoto” has supplied previous tasks that were also oftype “ImageChoice”, and is gathering information about the performanceof those tasks. The message in this example identifies the taskrequester in line 2, and lines 3-11 indicate to perform a search andprovide information about tasks of type “ImageChoice” that have beensubmitted by the task requester and that have been completed. Inresponse, the task requester will receive a message (not shown)including information about each of the tasks matching those specifiedcriteria.

FIG. 2C illustrates an example message that is later provided to thetask requester to give task results from performance of the taskillustrated in FIG. 2A, such as after receiving a similar message from atask performer to whom the task was assigned. In particular, line 3 ofthis example message indicates the task ID for the task to which theresults correspond, line 5 identifies the task performer as being“BestManBryan”, and in line 6 indicates that the task performance hasbeen completed. Lines 7-10 indicate the actual results of the task,which in this example includes an indication of a particular photographthat was selected, as well as a corresponding ID supplied by the taskrequester for the business being identified (in line 31 of the messageillustrated in FIG. 2A).

FIG. 2D next illustrates an example message sent back to the electronicmarketplace from the task requester to indicate that the results areacceptable by closing the task, which in this example triggers thepayment of 6 cents to be provided to the human performer for the taskperformance. If the task requester had instead been unsatisfied with theresults, the task requester could have rejected the prior performanceresult and instead made the task again available for performance toother task providers.

FIGS. 2E-2G next illustrate examples of some messages that areprogrammatically exchanged with a task performer in order to identifyand perform tasks of interest. In particular, FIG. 2E illustrates anexample message that a task performer can send to the electronicmarketplace in order to identify available tasks, such as by indicatingin lines 2-5 of this example message to perform a search for all tasksthat are open and available, and to rank the available types of tasks bythe number of each type that are available.

In response, the electronic marketplace may provide an example messageas illustrated in FIG. 2F, which indicates two types of available tasks.In this example, lines 3-6 of the message indicate that there are 400available tasks related to selecting photographs or other images (e.g.,to match them to business locations), and lines 7-10 of the messageindicate that there 80 available tasks related to translating textbetween French and English. In some embodiments, all available tasks maybe indicated to the task performer regardless of the qualifications ofthe performer, while in other embodiments only available tasks for whichthe performer is qualified and/or which the performer is authorized toaccess may be indicated (e.g., if the performer in this example has apreviously established associated qualification of having French toEnglish translation abilities).

FIG. 2G then illustrates an example message that a human task performercan use to request that an available task be assigned to them. While insome situations a human task performer may identify one or more specifictasks of interest (e.g., by the task IDs of those tasks), in thisexample the human task performer indicates an available task byspecifying criteria related to the task. In particular, this examplemessage requests in lines 3-10 to assign and lock one of the open tasksfor selecting images, and in particular to rank tasks of that type bytheir creation date so as to select the oldest available task of thattype. After information about the task is provided to the human taskperformer (such as in a message similar to that of FIG. 2A), the humantask performer can make an appropriate selection and provide results oftask performance to the electronic marketplace (such as in a responsemessage similar to that of FIG. 2C). It will be apparent that a varietyof other types of messages could similarly be exchanged for variousother types of functionality and using various other formats, and thatsimilar types of messages could be used for a wide variety of types oftasks.

FIGS. 4A and 4B are a flow diagram of an embodiment of a TaskFulfillment Facilitator routine 400. The routine may, for example, beprovided by execution of an embodiment of the TFF system 130 of FIGS. 1Aand 1B and/or of TFF system 340 of FIG. 3, such as to in thisillustrated embodiment provide an electronic marketplace for humanperformance tasks by interacting with task requesters and taskperformers as appropriate to facilitate performance of tasks, as well asoptionally to interact with other third-party systems as appropriate.

The routine begins in step 405, where an indication is received ofinformation or a request, and in step 410 determines whether the senderof the information or request is authorized to perform requests of thattype or provide information of that type, such as based on previouslydefined access controls for specific users or types of users. If theroutine identifies the sender as authorized in step 415, the routinecontinues to step 420 to determine whether the received indication was arequest to submit a task. If so, the routine continues to step 425 tostore task information received in step 405, including any task criteriarelated to task performance, information about any associated rewardsfor performance of the task, and any associated information to beanalyzed or manipulated as part of the task.

The routine then continues to step 430 to determine whether to performautomated matching to identify task performers who are appropriate toperform the task, such as based on the type of task submitted and/or anexplicit request by the submitter of the task, although in otherembodiments such automated matching functionality may not be provided.In the illustrated embodiment, if automated matching is to be performed,the routine continues to step 435 to execute an Automated Matcherroutine, and in step 440 then receives identifications from theAutomated Matcher routine of any identified task performers. The routinethen notifies those identified task performers of the task in anappropriate manner (e.g., based on previously specified user preferencesfor those task performers). After step 440, or if it was insteaddetermined in step 430 that automated matching was not to be performed,the routine continues to step 490.

If it was instead determined in step 420 that the received indicationwas not to submit a task, the routine continues instead to step 445 todetermine whether a request was received to perform an update for anexisting task, and if so continues to step 450 to perform the update asappropriate. Such updates may take a variety of forms, such as to modifyinformation about or delete a pending task that has not been performed,to perform an indicated activity related to a task (e.g., to cause areward to be provided to a task performer after the task requester hasreviewed and accepted the task results), etc. If it was insteaddetermined in step 445 that the received indication was not to update anexisting task, the routine continues to step 455 to determine whetherthe received indication was a request for information about one or moretasks and/or one or more users, such as for a search or browse request,a request for detailed information about a particular task or user, arequest for summary or aggregate information about some or all types oftasks and/or users, etc. If so, the routine continues to step 460 toidentify and obtain the requested information, and then continues tostep 462 to determine whether the indicated recipient of the informationis authorized to receive all of the obtained information, such as basedon access controls associated with any aspects or elements of theobtained information (although in other embodiments the accessdetermination may be made before or as part of the obtaining of theinformation). In step 464, the routine then removes any information forwhich the recipient is not authorized, and in step 466 sends anyremaining information to the recipient. In some embodiments, indicationsmay be provided to the recipient of any removed information for whichthey were not authorized, while in other embodiments such indicationsmay not be provided. After steps 450 or 466, the routine continues tostep 490.

If it was instead determined in step 455 that the received indicationwas not a request for information about tasks or users, the routinecontinues instead to step 470 to determine whether the receivedindication was a request from a task performer to perform an indicatedtask. If so, the routine continues to step 471 to retrieve and provideinformation about the task to the task performer in an appropriatemanner (e.g., in a manner specified for the task), and in step 473obtains results of performance of the task by the task performer. Instep 475, the routine then determines whether to immediately send thetask results to the task requester, such as based on informationassociated with the task and/or user preferences for the task requester.If so, the routine continues to step 477 to send the results. After step477, or if it was instead determined in step 475 not to send the resultsto the task requester at this time, the routine continues to step 479 tooptionally provide any reward associated with the task to the taskperformer in accordance with the task information, such as if suchrewards are to be provided automatically upon receipt of the taskresults or instead if the task results satisfy any automaticallyverifiable criteria specified for the task that trigger the providing ofthe reward. After step 479, the routine continues to step 490.

While the illustrated embodiment indicates a synchronous flow in whichthe routine waits for and obtains task results in step 473 after sendingthe task information in step 471, in other embodiments the routine couldbe structured in other manners, such as to continue with otherprocessing while waiting for task results (if any) to be sent. Inaddition, in some situations task performers may not provide taskresults for a task after they accept an assignment to perform the task,which may be indicated to the routine in an explicit message from thetask performer that the task performer is abandoning or withdrawing fromtask performance or instead by not receiving task results within aspecified period of time, and if so the routine would continue to handleother task-related requests and information. In addition, while notillustrated here, in other embodiments various types of notificationsmay be sent to task requesters related to their submitted tasks, such aswhen a task is assigned to a task performer for performance and/or whenan assigned task is withdrawn from a task performer who has notcompleted the performance.

If it was instead determined in step 470 that the received indicationwas not to perform a task, the routine continues instead to step 480 todetermine whether a request was received to specify information relatedto user qualifications, and if so continues to step 482 to execute aQualification Manager routine to handle the qualification-relatedactivities. If it was instead determined in 480 that the receivedindication was not to specify qualification-related information, theroutine continues instead to step 484 to determine whether informationor a request was received related to corroboration of userqualifications or other user information, and if so continues to step486 to execute an Information Corroboration Manager routine to handlethe corroboration-related activities. If it was instead determined instep 484 that the received indication was not related to corroboration,the routine continues instead to step 488 to perform another indicatedoperation as appropriate, such as from a task performer indicating awithdrawal from or abandonment of an assignment to perform a task, tospecify various types of user information (e.g., information related toa user's identity or attributes, information related to an account of auser with the TFF system, information related to specifying accesscontrols for information and/or functionality, administrative requestsrelated to system operations, requests for information related tomonitoring performance of tasks or other operations of the system,etc.).

After steps 482, 486, or 488, the routine continues to step 490 toexecute an Activity Tracking Manager routine to log information aboutactivities that have occurred and to generate various types of reviewand summary aggregate information for the system related to tasks andusers. After step 490, the routine continues to step 492 to perform anyadditional housekeeping operations, such as to take appropriate actionswhen events do not occur within specified periods of time (e.g., towithdraw assigned tasks from task performers who do not timely performthe tasks, to provide rewards to task performers for tasks that theyhave performed when task requesters do not timely reject the taskresults provided by the task performers, etc.). After step 492, theroutine continues to step 495 to determine whether to continue. If so,or if it was determined in step 415 that the sender was not authorized,the routine returns to step 405, and if not continues to step 499 andends. While the illustrated embodiment may include tasks being specifiedone at a time, in other embodiments tasks may instead be specified inother manners, such as to allow multiple tasks to be submitted together(e.g., to allow for batch processing), whether or not those tasks arerelated to each other.

FIG. 5 is a flow chart of an embodiment of a Qualification Managerroutine 500. The routine may, for example, be provided by execution ofan embodiment of the User Qualification Manager module 133 of FIG. 1B,such as to receive information related to user qualifications and handlethe information as appropriate.

The routine begins in step 505, where an indication is received ofinformation or a request related to user qualifications. In step 510,the routine then determines whether the received indication was arequest from a user to define a new type of qualification for use withthe system, such as for use by that user and/or other indicated users(or all users). If so, the routine continues to step 515 to obtainvarious information about the new qualification type and to store it forlater use. As discussed in greater detail elsewhere, such qualificationtypes may include a unique name, indications of one or more entitiesauthorized to issue qualifications of that type, indications of a ratingscale for how qualifications of that type may be rated, an indication ofa particular system at which the qualification type is defined, (e.g.,the TFF system), etc.

If it was instead determined in step 510 that the received indicationwas not a request to define a new type of qualification, the routinecontinues instead to step 520 to determine whether the receivedindication was a request to specify a particular qualification for aparticular user, such as from an issuing entity for qualifications ofthat type. As discussed in greater detail elsewhere, in some embodimentsany user is allowed to author any qualification for any user (includingthemselves), with other corroborative and/or reputational informationable to be used to determine how much weight to give to a particularqualification. If it is determined in step 520 that the receivedindication was related to specifying a qualification, the routinecontinues to step 525 to obtain the received qualification informationand to store it for the indicated user. As discussed in greater detailelsewhere, such qualifications may include an indication of aqualification type for the qualification, of a rating or value for thequalification, the issuer of the qualification, an indication of aparticular system that stores the qualification (e.g., the TFF system),etc. After step 525, a determination is made in step 530 whether toattempt to corroborate the qualification information at this time, suchas based on other information that may serve as evidence of the accuracyor validity of the qualification. If so, the routine continues in step535 to execute Information Corroboration Manager routine 535, and if notcontinues to step 599. In other embodiments, such corroborationfunctionality may not be provided or may be performed at other times.

If it was instead determined in step 520 that the received indicationwas not a request to specify a qualification for a user, the routinecontinues instead to step 590 to perform another indicated operation asappropriate, such as to update information about or remove existingqualifications, or to provide information about user qualifications to auser or other system. In addition, in some embodiments the routine mayissue qualifications to at least some users, such as based on pastactivities of the user with regard to the TFF system that had beentracked, such as automatically (e.g., on a periodic basis) and/or inresponse to a received request from a user to issue one or morequalifications of a specified type for one or more specified user basedon specified types of tracked activity, and if so could perform suchqualification issuance in step 590. After steps 515, 535, or 590, theroutine continues to step 599 and ends. While the illustrated embodimentmay include qualifications and qualification type definitions beingspecified one at a time, in other embodiments qualifications and/orqualification type definitions may instead be specified in othermanners, such as to allow multiple qualifications and/or qualificationtype definitions to be submitted together (e.g., to allow for batchprocessing).

FIG. 6 is a flow diagram of an embodiment of an InformationCorroboration Manager routine 600. The routine may, for example, beprovided by execution of an embodiment of the User InformationCorroboration Manager module 137 of FIG. 1B, such as to receiveinformation and requests related to corroborating user qualificationsand other types of user information, and to respond as appropriate.

The routine begins at step 605, where an indication is received of acorroboration request or of corroborative information for a specifiedtype of user information. In step 610, the routine determines whethercorroborative information was received, such as for a particular userqualification or other piece of user information. If so, the routinecontinues to step 615 to associate the corroborative information withthe user qualification or other user information that it corroborates,such as for later presentation to others along with that userinformation to allow the recipient to assess its credibility.

The routine then continues to step 620 to determine whether toautomatically assess a degree of corroboration provided by thecorroborative information if possible, although in some embodiments suchautomatic assessment functionality may not be provided. In theillustrated embodiment, if the corroboration is to be automaticallyassessed, the routine continues in step 625 to analyze information aboutthe corroborative information in order to assess a degree ofcorroboration that the information provides for the user qualificationor other information to which the corroborative information applies. Forexample, the analysis may be based at least in part on the type ofcorroborative information and indicators about the reliability of thatinformation, such as the source of the information (and other associatedinformation about the source, such as a reputation of the source). Afterstep 625, the routine continues to step 630 to optionally combine theassessed degree of corroboration for the newly received corroborativeinformation with any other corroborative information for each userqualification or other user information to which it applies in order toassess an overall degree of corroboration for those user qualificationsor other user information, such as by using any of various informationcombination techniques (e.g., averaging, weighted averaging, etc.).

If it was instead determined in step 610 that the received indicationwas not corroborative information, the routine continues instead to step635 to determine whether a request was received to attempt to performcorroboration for indicated user information at this time, although inother embodiments such requests may not be handled. In the illustratedembodiment, if a corroboration-related request was received, the routinecontinues to step 640 to attempt to obtain appropriate corroborativeinformation, and if it is determined in step 645 that it was obtained,the routine returns to step 615 to process the corroborativeinformation. Attempts to obtain corroborative information may beperformed in a variety of ways, such as based on the type of informationto be corroborated (e.g., attempting to corroborate a user's identitybased on querying the user to provide evidence of the identity invarious forms, attempting to corroborate a qualification of the user bytesting the user with respect to that qualification, attempting toobtain information from a third party that may have additional relatedinformation, etc.).

If it was instead determined in step 635 that a corroboration-relatedrequest was not received, the routine continues instead to step 690 toperform another indicated operation related to corroboration asappropriate, such as to provide corroborative information or an assesseddegree of corroboration to users or other systems. After steps 630 or690, or if it was instead determined in step 620 not to assess thedegree of corroboration or in step 645 that corroborated information wasnot obtained, the routine continues to step 699 and ends. While notillustrated here, in other embodiments additional types of functionalitycould be provided, such as to provide a response to the sender thatprovided the corroborative information or corroboration-related requestin step 605, such as to indicate the results of the analysis of providedcorroborative information and/or the results of attempting to satisfy areceived corroboration-related request. While the illustrated embodimentmay include corroborative information being specified one piece at atime, in other embodiments corroborative information may instead bespecified in other manners, such as to allow multiple pieces ofcorroborative information to be submitted together (e.g., to allow forbatch processing).

FIG. 7 is a flow diagram of an embodiment of an Activity Tracker routine700. The routine may, for example, be provided by execution of anembodiment of the Activity Tracking Manager module 138 of FIG. 1B, suchas to track user activities related to task performance. The routinebegins at step 705, where an indication is received of one or moreactions taken by task requesters and/or task performers since a lastactivity tracking analysis. The routine continues in step 710 to storethe activity information and to update quantitative measurements and/orrankings for users that are affected by the indicated actions. Theroutine then continues to step 799 and ends. In some embodiments, theroutine may be executed at various times, such as periodically, inresponse to an activity to be tracked and/or in response to a request toperform the routine.

FIG. 8 is a flow diagram of an Automated Matcher routine 800. Theroutine receives indications of new task requests and attempts toautomatically match the tasks to appropriate task performers. Theroutine may, for example, be provided by execution of an embodiment ofthe Task and User Matching Manager module 132 of FIG. 1B, such as tomatch tasks and task performers as appropriate. In some embodiments, theroutine may be performed in response to receiving new submissions ofsome or all tasks and/or at other times (e.g., in response to requeststo perform the matching). In addition, in some times the automatedmatching may be performed in other ways, such as to receive anindication of one or more task performers (e.g., new task performers forthe system) and to match appropriate tasks to those performers.

In the illustrated embodiment, the routine begins at step 805, where anindication is received of a new task. In step 810, the routineidentifies one or more task performers whose qualifications satisfy anyqualification criteria for the new task. In some embodiment the matchingof qualifications may be performed without the routine understanding themeaning or context of the qualifications (e.g., based on identifyingqualifications from task criteria and for task performers that are ofthe same qualification type and that have compatible values or ratings),such as in embodiments in which the qualifications are of types definedby users. The routine then continues in step 815 to retrieve preferenceinformation for the identified task performers to determine whether andhow to notify them of the new task. In step 820, the routine notifiesthe identified task performers of the new tasks in accordance with thepreference information. While not illustrated here, in other embodimentsthe automated matcher subroutine could further automatically assign newtasks to one or more human task performers as appropriate, such as basedon prior requests by the task performers. In addition, in someembodiments the automated matcher routine may perform one or more of theindicated activities for a fee, such as from the task requester whosupplied the new task and/or the task performers who are notified of thetask. After step 820, the routine continues to step 899 and ends. Whilethe illustrated embodiment may include tasks and tasks performers beingmatched one at a time, in other embodiments tasks may be instead matchedto task performers and/or task performers may instead be matched totasks in various other manners, such as to allow multiple tasks and taskperformers to be matched together (e.g., to allow for batch processing).

As previously noted, a variety of types of tasks can be submitted andperformed in various embodiments, and may include tasks that involve avariety of types of activities by human task performers, such asanalysis of one or more supplied pieces of information (e.g., totranslate a supplied word or paragraph, to select which of severalsupplied photographs best represents a specified subject matter, or toidentify whether a supplied human signature is authentic, such as bycomparison to a known sample and/or on another basis), or retrieval oridentification of desired information. In some embodiments the tasks mayeach require little time of the human task performer (e.g., at most afew seconds), while in other embodiments tasks may be sufficientlycomplex to take significant amounts of time (e.g., hours or days). Inaddition, while in some embodiments each of the tasks may be a cognitivehuman performance task that uses cognitive and/or other mentalcapabilities of human task performers, in other embodiments some or allof the tasks may include physical activities by one or more human taskperformers (e.g., to take and supply a specified type of picture),whether instead of or in addition to one or more cognitive or othermental activities of one or more human task performers.

In addition, in some embodiments each task may be a stand-alone activitythat is unrelated to other tasks, while in other embodiments some tasksmay each be a small part of a larger collective, such as to allow alarge number of unrelated human task performers to perform atime-consuming collective task in parallel in a very short time (e.g.,without the individual task performers even being aware that theindividual tasks are part of a larger collective task), such as in amanner analogous to grid computing. When individuals tasks are part of alarger collective task, a single task requester may in some situationscollect and aggregate or analyze the individual results, while in othersituations some or all of the aggregation or analysis activities mayinstead be one or more other tasks made available through the electronicmarketplace. Other information related to users performing tasks isincluded in pending commonly-owned U.S. patent application Ser. No.09/976,717, filed Oct. 12, 2001 and entitled “A Hybrid Machine/HumanComputing Arrangement.”

A non-exclusive list of examples of types of human performance tasksthat may be performed via the electronic marketplace include thefollowing: translation or conversion of information of various forms(e.g., text, speech and other audio, images and other video, etc.)between languages and/or information form (e.g., transcription of audiomaterial); selection of one or more groups of visual information (e.g.,photographs or other images) and/or audio information (e.g., songs,voice messages, etc.) that satisfy a specified criteria (e.g., toidentify groups that are similar, that have specified characteristics,etc.); supplying answers to specified questions (e.g., to obtaininformation for use in research, for marketing purposes, for use asfeedback, for use with computer-human interface and other types of userstudies, for use as pre-release and/or post-release reviews of orreactions to products and/or content, etc.) and/or supplying other typesof specified information (e.g., a missing description for a specifieditem available from a Web store); outsourced tasks of various types(e.g., engineering, marketing, sales, customer support, etc.); andanalysis of content of various forms of information to identifyspecified types of content (e.g., spam, pornography and other obscene oroffensive material, etc.) and/or to otherwise categorize the information(e.g., according to a predefined taxonomy; based on a determined sourceor other aspect of the information; etc.). When information is to beanalyzed as part of a task, that information can be provided to a taskperformer in a variety of ways, such as from the TFF system along withother task-related information, by providing a link or other indicatorto the task performer to allow the task performer to retrieve theinformation (e.g., from the TFF system, from the task requester for thetask, from a location or source external to the TFF system, etc.).

As one specific example, a task requester may submit tasks on behalf ofa store (e.g., a Web store) that each request at least two human taskperformers to submit a specified type of data that is missing for one ormore items offered by the store (e.g., performance specifications for astereo). The first two human task performers that submit the same (orsufficiently similar) data for a task will each receive payment (e.g.,$0.25), thus providing information with some degree of reliability in amanner that minimizes overhead for the task performers and the taskrequester. As another examples, tasks may include analyzing results oftask performance from other task performers, such as to corroborate orverify the accuracy or other aspect of interest of the results (e.g., tohave a human task performer with a higher level or qualification and/oradditional qualifications review the results from less-qualified taskperformers), to compare results from multiple task performers for thesame or related tasks (e.g., to compare performance of human taskperformers to automated task performers, such as for research purposes,or to compare performance of different groups of human task performers),to analyze results in an attempt to determine whether the task performeris human or not (e.g., for research purposes, or to verify orcorroborate the identity and/or qualifications of a task performer),etc.

As previously noted, in some embodiments a variety of types of userqualifications can be specified and used, and may further in someembodiments each be associated with a specified qualification type. Suchqualification types may include a variety of associated information invarious embodiments, including a name (e.g., for later referencepurposes), a rating scale to indicate allowed values (e.g., any floatingpoint number, true/false, an enumerated ranked set of values, etc.),indications of one or more entities or entity types who may issuespecific qualifications of the qualification type to users, expirationconditions (e.g., an expiration date/time) or other indications of howand when qualifications of the type are effective, an indication of theuser (e.g., a unique user identifier) who specified the qualificationtype (e.g., to limit who can modify, delete and/or view informationabout the qualification type), etc. In some embodiments, eachqualification may be stored in or as part of a qualification datastructure that may contain some or all of the indicated types ofassociated information, whether using a qualification data structurespecific to a specified qualification type or independent of anyspecific qualification type. In addition, for embodiments in whichmultiple instances or versions of the TFF system are operating, or inwhich other types of systems with overlapping types of functionality mayinteract, the specified qualification types may further have anassociated indication of the system at which the qualification type isspecified. Moreover, in some embodiments users may be allowed to definenew qualification types for use within the system.

As previously noted, task performer qualifications can also take variousforms in various embodiments, including self-assertions by a user ofqualifications that they possess, human-generated ratings of human taskperformers by other humans based on prior task performances by the taskperformers (e.g., feedback from task requesters who supplied the tasksand/or ratings by other reviewers of the past performances), andcredentials supplied by third-party authorities (e.g., educationaldegrees or other accomplishments from specified educationalinstitutions, awards and other recognitions from specified organizationsor contests, recognitions of levels of training or knowledge, etc.). Oneform of credential that may be used in some embodiments is a reputationor other rating of a user that is supplied by a third party as aservice, such as for a fee. A discussion of techniques related togenerating and providing user rating information that could be used insome embodiments for user qualifications is included in pendingcommonly-owned U.S. patent application Ser. No. 10/646,341, filed Aug.22, 2003 and entitled “Managing Content Based On Reputation,” which ishereby incorporated by reference in its entirety.

Task performer qualifications may also include various quantitativemeasurements by the electronic marketplace of tracked activities ofhuman task performers, including measurements related to a specifictask, average and/or cumulative measurements over a specified group ofmultiple tasks and/or a specified period of time, and information abouta rate of change for one or more measurements over one or more specifiedperiods of time. A non-exclusive list of types of measurements that maybe used in various embodiments include the number of tasks assigned to atask performer, the number or percentage of tasks assigned to a taskperformer that are completed, the number or percentage of taskscompleted by a task performer that are approved or rejected (e.g., bythe task requester), the number or percentage of assigned tasks that areexplicitly abandoned (or “dropped”) by a task performer beforecompletion, the number or percentage of assigned tasks that arewithdrawn from a human task performer before completion (e.g., by theelectronic marketplace for failure to complete the task within aspecified time limit), the number or percentage of tasks that areoffered to a task performer that are refused (if an embodiment includesoffering tasks to task performers), an amount of time taken beforeperforming assigned tasks (e.g., an average or distribution over time),etc. In some embodiments, task requesters may also be givenqualifications based on quantitative measurements by the electronicmarketplace of tracked activities, such as the number of submittedavailable tasks from a task requester, the number or percentage ofsubmitted tasks that are removed before assignment by a task requester,the number or percentage of completed tasks that are approved orrejected by a task requester, the number or percentage of submittedtasks that are modified by a task requester, the timeliness of a taskrequester in providing payment when due, etc. In addition, in someembodiments task performers may be able to provide qualifications fortask requesters by rating them, such as for task performers that havebeen involved in performance of tasks submitted by those taskrequesters. Such ratings may be based on, for example, thereasonableness of the task requester in categorizing their submittedtasks, in providing appropriate compensation for the level of taskdifficulty, in providing payment after satisfactory task results areprovided, etc.

In some embodiments, the electronic marketplace may also providerankings of task performers relative to other task performers on thebasis of one or more of the various types of qualifications, and a taskperformer's ranking level could further be used as a qualification(e.g., a performer in the top 10% for a specified quantitativemeasurement). More generally, a performer qualification can in someembodiments include any information about a performer that can bemeasured or identified.

Thus, as previously noted, a variety of types of information may serveas qualifications in some embodiments. More generally, in someembodiments any user may specify any qualification for any user(including themselves), with the qualification measuring any dimensionor aspect, using any rating scale, and may further include objectiveand/or subjective qualifications. The meaning or context of aqualification may in some embodiments be maintained externally to theTFF system (e.g., by the issuers of the qualifications and/or taskrequesters that use them as criteria for tasks being submitted), suchthat the TFF system performs tracking of and matching of qualificationsas arbitrary data values without knowledge or use of the meaning of thequalifications. Thus, in such embodiments any user can act as their ownissuing authority to issue qualifications, and to later use thequalifications by searching for users that have them and/or tasks thatinclude them in their task criteria. In addition, in some embodimentsqualifications may be issued to and used for entities that are notdirectly associated with users of the TFF system, such as qualificationsfor various types of third-party entities (e.g., issuers ofqualifications).

In addition, in some embodiments the activities of users with othersystems may be used as qualifications or in other manners, such as basedon importing data from such other systems. For example, in someembodiments the TFF system may be affiliated with or otherwise receiveinformation related to shopping-related activities of users, such aswith a Web retailer or other online merchant. Types of information thatmay be obtained and used from a retailer's system include the user'sbrowsing history, search history, click-stream history, click-throughhistory, purchase or rental history, payment and/or credit history,returns history, history of service-related activities (e.g., frequencyand number of calls to customer service), use of discounts and purchaseincentives, contributions of content and/or information (includingvarious details about such contributions, such as length, subjectmatter, frequency of submission, quality as judged by other users, etc.)provided by the user (e.g., reviews of items, lists or groups of itemsof interest, etc.), participation in various community-based features,reputation within the system (e.g., based on voting or other rating byother users), browser and browsing device used, etc. Similarly,qualification and other information from the TFF system may in someembodiments be able to be exported to other systems for use by thoseother systems. In addition, when such types of information areavailable, they can also be used in other ways. For example, ifrecommendation information is available for a user based on arelationship of the user to other users, such recommendation informationmay be used as qualification information for the user (e.g., this useris likely to want to do tasks of a certain type) and/or to recommendtasks to a task performer (e.g., other task performers similar to youperform tasks of this type).

A non-exclusive list of various example qualifications includes thefollowing:

C++ programming Level 2 test certification, issued by Professor BobSmith of Stanford University, test score 95% (Jan. 13, 2005, 10:03 GMT;expires 5 years from issuance)

C++ programming recommendation certificate, issued by Kernighan &Ritchie, “Expert” rating (Jan. 13, 2005, 10:03 GMT; no expiration date)

Able to distinguish pornography from non-pornography according tocommunity standards prevalent in St. Louis, Mo., issued by myself, “Iknow it when I see it” (Jun. 27, 2006, 14:18 PDT)

Completes tasks requiring a self-issued “Able to distinguish pornographyfrom non-pornography according to community standards prevalent in St.Louis, Mo.” qualification with over 90% acceptance rate, issued by TFFsystem, 1000 tasks completed with acceptance rate of 98% (Jun. 27, 2006,14:18 GMT, based on performance results in TFF system from Jan. 14,2005, 9:00 GMT through the present)

Dialysis patient unable to eat solid food, issued by the Mayo Clinic,(no value) (Jan. 15, 2005, 22:47 EST)

Scholastic Aptitude Test taken, issued by Educational Testing Service,Princeton, N.J., scores verbal=508, math=518 (Oct. 1, 2004, expiry date6 years from issuance)

Qualified to practice law in the state of California, issued by theState Bar of California, “active member” and “member in good standing”(Oct. 3, 2004; date of bar admission May 15, 1994; continued statuscontingent on compliance with continuing legal education requirement,with next compliance period ending on or before Jan. 31, 2005).

Has published at least two reviews of popular English-language novels inThe New York Times Book Review, issued by The New York Times, totalnumber of such reviews published by the reviewer to date (Jun. 15, 2005,12:01 EDT).

Is a considerate person, issued by Jeanette Smith of Geneva,Switzerland, “très sympa” (Feb. 29, 2004, 12:32 CET).

Information about qualification-related activities can also be trackedand stored in various ways. For example, performance-relatedqualification scores could be tracked for all tasks, regardless of tasktype and/or required qualifications. Alternatively, activities could betracked for particular types of tasks or groups of related tasks (e.g.,to determine that a task performer completes tasks with qualification‘A’ 95% of the time but completes tasks with qualification ‘B’ only 80%of the time). Similarly, activities could be tracked for categories oftasks, such as to determine that a task performer completes ‘pornographyidentification’ tasks correctly 100% of the time, but only completes‘czech-english translation’ tasks satisfactorily 80% of the time.

When searching for information related to qualifications and/or tasks,the TFF system in some embodiments allows a variety of types of searchesto be performed. A non-exclusive list of example searches that a usercould execute includes the following:

All tasks that I created/accepted, and status/progress of same (e.g., bya task requester and/or task performer)

All tasks currently available for acceptance, including the necessaryqualifications for each task and the payment/reward for each (e.g., by atask performer)

All qualification types in the system that have been added in the last24 hours (e.g., by any user)

All users to whom new qualifications have been issued in the last week(e.g., by any user with sufficient permissions)

All users having a nickname attribute with a value of “Jill” (e.g., byanyone with sufficient permissions to see user nicknames)

Which available tasks have prices<$1? How many task performers currentlyin the system and not currently working on a task would qualify for oneor more of these tasks? (e.g., by a task requester)

How many task requesters of available tasks have qualification B? (e.g.,by a task performer, such as a task performer who will only do tasksfrom certain task requesters)

How many users have qualifications X and (Y or Z) but not W? Of these,

which ones have qualification X with a value above 90%? (e.g., byanyone)

Which task performers completed tasks requiring qualification X thisweek? What percent of their total completed tasks were approved by therequesters?(e.g., by anyone)

Of all qualification types containing “C++” in the name field, whatpercent were created in the twelve-month period ending Jun. 30, 2004?(e.g., by anyone)

How many qualifications containing the string “St. Louis” in their namewere issued last month by or on behalf of Issuer ABC? (e.g., by anyone)

In some embodiments, the system further provides functionality to assistin authenticating or otherwise corroborating information about users,such as identities of users, specified qualifications of users, andother kinds of attributes of users. In particular, various informationmay be obtained and used to serve as evidence to corroborate one or morepieces of information about users, such as by obtaining informationabout a user's past activities (e.g., feedback and/or rating informationrelated to the activities), “testimonials” or other assertions fromothers as to the accuracy of information about a user, information abouta user's reputation, information about a user's status within acommunity or group (e.g., a social networking group), and more generallyany observable indicia that can serve to corroborate user information.The corroborative information may be obtained in various ways, includingfrom third-party sources and/or from a user whose information is beingcorroborated, and the obtaining of the corroborative information may beinitiated in various ways, including as initiated by a user who issupplying corroborative information and/or initiated in an automatedmanner (e.g., based on a need for the corroborative information). Inaddition, in some embodiments corroboration is further enhanced by usingadditional techniques, such as by monitoring activities of a user and/orby occasionally challenging a user (e.g., by giving the user a shorttest) to verify information about the user (e.g., to obtain informationto confirm or contradict a user's qualifications and/or identity).

As one example of corroborating users' identities based on evidence orother information from third parties, the third party may be an issuerof credit cards and/or debit cards, with such a card providing evidencethat the cardholder name on the card is the actual name of thecardholder. A variety of other types of evidence or informationassociated with third parties may similarly be used to provideinformation about a user's identity, including information about a bankaccount or other financial account of a user, government-issuedinformation for a user (e.g., a driver's license, passport, socialsecurity number, voting identity card, etc.), other government records(e.g., property records), etc. In such situations, a user may obtainsuch evidence from the third party and later provide the evidence to thesystem, or alternatively the system may in some embodiments directlyinteract with a third party to obtain such evidence for a user. Forexample, the system may interact with a third-party card issuer orgovernment agency, or instead with a third party that provides a serviceinvolving verifying users' actual identities based on appropriateevidence and then providing assurances of the verified actual identityinformation to others upon request.

As previously noted, various types of evidence or other corroborativeinformation related to users' identities can be obtained in various waysin various embodiments, and can be used in various ways to identifyand/or corroborate a user's identity. For example, in some embodimentsinformation about a users identity may be obtained by using informationstored by a telephone service provider. In some such embodiments, a usermay be provided with a toll-free number of a system performing identitycorroboration activities, and when the user calls that toll-free number,the entity can gather user identity information provided by thetelephone service provider with that call (e.g., a number from which theuser is calling and a name associated with that number), such as for usein corroborating an actual name that the user previously provided.Information may be gathered about users in similar manners from otherthird parties that have similar information, such as by using Caller IDtechnology with non-toll-free numbers, doing a reverse number lookup ona phone number provided by a user in order to identify the name of theuser associated with that phone number, gathering information about auser based on an electronic communication sent by the user (e.g., basedon an email address used by the user, a domain name of the user, aninstant messaging or other message sender identity, etc.), and/orgathering information stored by other providers of services to the user(e.g., an Internet Service Provider, utility companies, educationalinstitutions, medical facilities, etc.). More generally, in someembodiments the system may provide a predefined API and/or one or moreWeb services via which others can provide corroborative and otherinformation about users.

In some embodiments, information about users' identities may further beobtained and/or corroborated based on groups to which the users belongand/or other affiliations of the users. For example, a user may be ableto demonstrate membership or other affiliation with a group ororganization that provides publicly available information about itsmembers or other affiliated users, thus providing some corroborationthat the user's asserted identity is accurate based on the assertedidentity being in the publicly available membership or affiliationinformation. Alternatively, a user may be part of a social networkinggroup or other group of users such that one or more other users of thegroup will attest to an identity of the user. In such embodiments, auser may provide contact and other information about one or more of suchother users (e.g., email addresses), and a system performing identitycorroboration activities may then use the provided information to assistin corroborating the user's identity, such as by using the contactinformation to query those other users to provide corroborativestatements or other information about the user's identity. In addition,when information from other users is used to corroborate informationabout a user (e.g., based on a social networking group), an additionalfactor that may be considered is whether a group of users is merelyacting as a self-corroborating body such that users of the group arecorroborated only by each other, or whether other external evidence isavailable to provide additional corroboration.

After corroborative information is obtained, it may be used in variousways. In some embodiments, one or more pieces of corroborativeinformation for a piece of user information (e.g., a user qualification)may be presented or otherwise provided with the user information, suchas to allow the recipient of the user information to evaluate itsaccuracy, credibility and reliability based on the associatedcorroborative information. In other embodiments, the system may attemptto automatically assess the corroborative information in order todetermine a confidence level or value or other assessment of the userinformation being corroborated, such as based on a type of thecorroborative information, a degree of correspondence between thecorroborative information and the information being corroborated, and/oron the source of the corroborative information (e.g., to affect theweight given the corroborative information, such as based on areputation of the source). In addition, in some embodiments some of thetypes of corroboration-related activities may be performed for a fee,such as from the user whose information is being corroborated.

A particular type of performer qualification that is available in someembodiments relates to performance of a human task performer on one ormore qualifying examinations. For example, a task requester who plans tosubmit multiple tasks of a similar type may first create a task with aknown or desired performance result. That task may then be madeavailable via the electronic marketplace as a qualifying examinationtask for performance by human task performers that are interested inperforming other later tasks for the task requester. After a human taskperformer provides results for the qualifying examination task, thoseresults can be graded relative to the known or desired results in orderto determine whether and/or at what level the human task performer cansuccessfully perform the task. A specified level of performance for thequalifying examination task (e.g., having a minimum specified score, orscoring at a minimum percentile relative to other human task performers)can then be used as a performer qualification criteria for later tasksby that task requester. Such qualifying examination tasks can beperformed in various ways in various embodiments, including with orwithout a fee paid to successful performers of the task, with a fee paidby task performers for a task performance attempt and/or completion, asa task available to any task performers or to only task performers thatmeet other specified criteria (e.g., a first specified number of humantask performers to successfully pass the test, to human task performerswho have other specified qualifications, etc.), and as a task that isexplicitly identified to task performers as a qualifying examination orthat is not identified as such.

In addition to performer qualification criteria, task requesters canalso specify a variety of other types of criteria for tasks. Forexample, in some embodiments task requesters may specify criteriarelated to when a task is to be performed, such as an expiration timeperiod for initial assignment to a human task performer and/or anexpiration time limit for a human task performer to provide results oftask performance after a task has been assigned to them. A taskrequester may also in some embodiments specify information about aformat in which results are to be supplied, including by supplyinginformation to the task performer related to the results format (e.g., aresponse form to be completed by the human task performer, or anexecutable results program that the human task performer is to use toprovide results and/or to perform the task). The performer qualificationcriteria and other types of criteria can also be specified in variousforms, including as an exact match and as a minimum or maximumthreshold, and for various activities related to a task (e.g., to allowtask assignment; to verify performance results as being satisfactory; todetermine whether a value of a task performer's qualification issufficient, such as based on a generated confidence level or value forappropriateness of the qualification value; to determine whether a taskperformer's qualification is sufficiently corroborated, such as based ona generated confidence level or value based on a degree or amount ofcorroboration; etc.). Such thresholds may also be specified by otherusers (e.g., task performers) and/or automatically by the TFF system inother situations and embodiments.

In addition, in some embodiments task requesters may supply additionaltask-related information to assist task performers in identifyingappropriate or interesting tasks, such as one or more categories for thetask (e.g., based on a type of the task) and/or one or more keywordscorresponding to the task. Such category and/or keyword information canthen later be used by task performers when searching for and/or browsingfor tasks of interest. In other embodiments, such category and/orkeyword information may instead be automatically generated by theelectronic marketplace based on analysis of information related to thetask (e.g., by using a textual description of the task provided by thetask requester, by using historical information about tasks supplied bytask requesters, by using information that is supplied with the task tobe analyzed, by using information about criteria specified for the task,etc.).

As previously noted, in at least some embodiments the task requests mayalso each specify one or more fees to be paid by the task requester toone or more task performers for successful performance of a task. Insuch embodiments, the fee can be specified to be paid under any of avariety of circumstances, including in a manner related to a specifiedstate of a task (e.g., to the first task performer whose performanceresults are explicitly accepted by the task requester, to the first taskperformer whose performance results are automatically accepted by theelectronic marketplace, to the first task performer who suppliesperformance results to the electronic marketplace, to the first taskperformer to whom a requested task is assigned, etc.). In othersituations, multiple task performers may receive payment for performanceof a task, such as the first X task performers that provide results(where X is a specified number by the task requester), multiple taskperformers whose results are in agreement and form a specified level(e.g., a majority) of performance results from X task performers, etc.

In other embodiments, payment for task requests can be determined inother ways, such as based on bidding by task performers (e.g., as partof a standard or Dutch auction), as a variable rate that is dependent ona degree or amount of success in providing satisfactory performanceresults, etc. In addition, in some embodiments the task requester mayallow the electronic marketplace to specify the associated payment for atask (e.g., for a fee), such as based on a category of the task, ondynamic pricing based on current conditions at the time of task request,as part of a premium service for which the electronic marketplaceguarantees some aspects of the results (e.g., a maximum time to receiveperformance results, a minimum level of performance results, etc.).Moreover, in some embodiments the system provides information to taskrequesters to assist them in manually pricing tasks, such as byproviding historical pricing information for tasks of the same type orfor other related tasks, by providing summary information about currentpricing and current pricing trends, etc.

After payment is determined to be provided to one or more taskperformers for a task, the payment can be made in a variety of ways. Insome embodiments the electronic marketplace or an associated system mayprovide accounts to task requester and/or task performer users, and ifso payments may be made from those accounts of task requesters and/or tothose accounts of task performers. In other embodiments, the electronicmarketplace may also interact with third-party systems in order toeffect payment, such as credit card companies, banks, etc. In addition,in some embodiments a variety of other types of payments could be made,whether in addition to or instead of payments from task requesters totask performers, such as payments to the electronic marketplace fromtask requesters and/or task performers for any of the functionalityprovided by the electronic marketplace, and/or such as payments to taskrequesters from task performers for performing tasks of the taskrequesters. More generally, in some embodiments payments and otherrewards can be specified to flow from any one or more parties to any oneor more other parties, whether task performers, task requesters, the TFFsystem, external parties, etc. A discussion of payment-relatedtechniques that could be used to make payments in some embodiments isincluded in U.S. patent application Ser. No. 10/894,347, filed Jul. 19,2004 and entitled “Automatic Authorization Of ProgrammaticTransactions,” which is hereby incorporated by reference in itsentirety.

After a task request has been submitted to the electronic marketplace,task performers can obtain information about available tasks in avariety of ways. In some embodiments, task performers will make requeststo the electronic marketplace to identify tasks that are currentlyavailable that meet specified indicia, such as all currently availabletasks or tasks whose specified qualification criteria are satisfied bythe current qualifications of the task performer. While some such taskinformation requests may be made interactively in some embodiments, inother embodiments at least some such requests may instead be made in aprogrammatic manner, such as by using a specialized program orinstructions (e.g., a client-side program, macro, plug-in, etc.) that isdesigned to retrieve such information for a task performer (e.g., thatis obtained from the electronic marketplace or from a task requester fortheir tasks). In addition to searching for a task based onqualifications of the task performer, the task performers can alsospecify a variety of other types of information about tasks to identify,such as tasks available from specified task requesters, tasks inspecified categories or having specified keywords, tasks havingspecified associated payments or other associated criteria (e.g.,expiration date), tasks from task requesters who satisfy specifiedrequester qualification criteria, etc.

In addition to searching for tasks, task performers can also requestthat tasks be assigned to them in various ways, such as by identifyingone or more specific tasks of interest and/or by identifying tasks thatmeet specified conditions (e.g., based on task criteria, an associatedreward for a task, information about or an identity of a task requesterwho submitted the task, etc.). After a task has been assigned to a taskperformer, the task performer may then interact with the electronicmarketplace (whether interactively or programmatically) to provideperformance results information based on performance of the task. Inaddition, in some embodiments a task performer may specify in variousways that they desire to receive a string of assignments of relatedtasks, such as tasks of a specified task type. By creating such a“pipeline” of incoming tasks, the task performer may be able to performthe tasks more efficiently (e.g., if sufficient tasks are assigned to atask performer to allow them to constantly have a queue of availabletasks to be performed), and correspondingly may be charged a fee in someembodiments for receiving such functionality. The creation of such astring of task assignments may be performed in various ways, such as byregistering a notification and/or assignment request with the TFF systemfor a specified type of task, by repeatedly executing a search orassignment request with the TFF for a specified type of task, by usingan application program to automatically perform such repeated searches,etc.

In some embodiments, the determination of whether a task is to beassigned to a task performer is based at least in part on informationspecified for the task by the task requester. For example, each task mayallow a specified number (e.g., one) of simultaneous or sequentialassignments of a task to task performers. Moreover, in some embodimentsan assignment of a task is made in such a manner as to lock thatassignment (e.g., for a specified period of time) so that it is notavailable to other task performers, while in other embodiments suchlocking may not be performed. Thus, for example, if a task requesterdesired results as soon as possible and was willing to pay only thefirst human task performer who provided satisfactory results, the taskrequester could specify that the task be made available to any number ofhuman task performers and that it not be locked upon assignment,resulting in a race between task performers to be the first to supplysuccessful results. Alternatively, the task requester may instead desiresatisfactory results from only a single task performer but may providefor the task to be locked after it is assigned to a human task performerto allow them a specified amount of time (e.g., a minute or a day) toprovide satisfactory results before the task will be made available toother task performers.

As another example, the task requester may desire responses frommultiple task performers (e.g., to enable comparison of multipleresponses as an automated accuracy check), and if so may allow aspecified number of simultaneous assignments (e.g., corresponding to thenumber of desired responses). When responses from multiple human taskperformers are obtained, they can be used in various ways, such as togenerate an average of the various results, to identify results that areagreed upon by all or by a majority or by a median number, etc. Inaddition, in such situations the multiple task performers can be paid invarious ways, such as to provide the same payment to all task performerswho provided results, to provide payment only to task performers whoseresults were determined to be accurate or otherwise used (e.g., based onthem being in a majority of the results), to pay differing amounts todifferent task performers (e.g., based on determined accuracy of theresults, or promptness of providing the results), etc.

After a task performer has completed performance of a task and submittedthe results of task performance to the electronic marketplace, theresults are handled in a manner specified by the task requester. Forexample, in some embodiments such task results for a task may beimmediately forwarded to the task requester for the task, while in otherembodiments the task results may be stored until the task requesterretrieves them (e.g., after receiving notification from the electronicmarketplace of their availability). In addition, in some embodiments thetask requester may have specified one or more criteria related toevaluating whether the performance results are satisfactory, and if sothe electronic marketplace system may automatically perform such resultverification based on those criteria before providing the results to thetask requester. In some embodiments, the task requester will furtherreceive additional information related to performance of the task, suchas information about the identity of the task performer, while in otherembodiments such additional information may not be available to the taskrequester.

As previously noted, in some embodiments payment to the human taskperformers will also be triggered by one or more activities related tothe performance results, such as the supplying of the task results bythe task performer or the approval of the task results by the taskrequester and/or automated task verification activities. In addition, insome embodiments after task performance results are provided by taskperformers, the task requesters for those tasks may further be queriedto provide human-generated ratings for the task performers (e.g., foruse in qualification determinations for those task performers), such asrelated to adequacy and timeliness of the performance results, while inother embodiments the electronic marketplace could instead receive anysuch feedback information from the task requesters even when notexplicitly solicited. Similarly, in some embodiments task performers mayprovide rating and other feedback information for task requesters thatmay be used for qualification determinations for those task requesters(whether in response to queries or otherwise), such as related topromptness and adequacy of payment, sufficiency of the description ofthe task, etc.

In embodiments in which quantitative measurements are made of taskperformers and/or task requesters, such as for use as qualifications forthose users, the electronic marketplace system further performs avariety of types of tracking activities in order to gather informationfor those quantitative measurements. In particular, in some embodimentseach activity of a task performer and/or task requester relative to atask is recorded and can be used as a quantitative measurement. Inaddition, at least some such tracking information can also be used forother purposes in at least some embodiments, such as to determineavailability of and load on the electronic marketplace (e.g., todetermine whether additional computing resources are needed or whethercurrent computing resources are underutilized).

In addition to providing task information to task performers in responseto requests, the electronic marketplace may in some embodiments providefunctionality to automatically match task performers and new tasks asthey become available, such as for a fee (e.g., a fixed amount, or apercentage of any payment provided to the task performer if theycomplete a task for which they are notified). For example, if a humantask performer has previously supplied qualification information and/orpreference information regarding tasks of interest (e.g., tasks inspecified categories, having specified key words, from specified taskrequesters, from requesters having specified qualifications, etc.), suchas during an initial registration process, the electronic marketplacecan perform automated matching for new tasks that are submitted in orderto determine whether the human task performer satisfies any specifiedcriteria for the task and would desire to be notified of the task. Ifso, the electronic marketplace can notify the task performer in avariety of ways, such as based on previously provided preferenceinformation regarding how and when they are to be notified. In addition,in some embodiments the automated matching may further automaticallyassign new tasks to appropriate task performers (e.g., in accordancewith preference information specified by the performers), includinglocking the task assignments if appropriate for the task. In otherembodiments, task performers may receive similar functionality usingthird-party functionality, such as an automated program that obtainsinformation about new tasks from the electronic marketplace (e.g., basedon polling) and performs the automated matching functionality for thosenew tasks on behalf of one or more of the task performers.

Matching of tasks and task performers may be provided in a variety ofways. For example, in some embodiments matching will be performed in abi-directional manner, such as when tasks have criteria for taskperformers and task performers have conditions for tasks (e.g.,attributes of the task and/or of the task requester that submitted thetask). In addition, a variety of other types of information maysimilarly be considered when performing matching. For example, in someembodiments a match may be time-sensitive (e.g., based on an urgency ofa task) and/or price-sensitive (e.g., when the price for performing thetask varies over time, such as to increase the price over time until atask is performed or to instead decrease the price over time).Similarly, in some embodiments a variety of other types of informationmay be considered, such as legal constraints (e.g., to enforce a minimumor maximum limit on the number of tasks assigned to a task performer,such as for contractual or tax reasons, or to restrict performance oftasks in some embodiments and situations to task performers in a certaingeographical area due to tax or national security reasons). In addition,some types of tasks may be restricted to certain types of taskperformers, such as only new task performers (e.g., to assist new taskperformers who may lack extensive qualifications) and/or onlyexperienced task performers.

In addition, in some embodiments and/or for some types of tasks (e.g.,tasks for which a task requester has requested and/or purchased anenhanced, or “concierge,” level of service), the system may facilitatetask performance by attempting to locate a task performer to perform thetask in various ways. For example, the system may in some embodimentsassist task performers to enhance their qualifications, such as byrecommending to them to acquire new qualifications (e.g., based oncurrent and/or projected demand for qualifications, or based oncomparisons to other similar task performers with whom they may becompeting for tasks), and may further assist the task performers inacquiring the new qualifications in some embodiments (e.g., by offeringa qualification test to acquire the qualification, providing informationon how to acquire a qualification from a third-party qualificationissuer (or “issuing entity”), etc.). When an exact match for a taskperformer is not available, the system may also provide additionalfunctionality to assist a task requester, such as to identify taskperformers who are closest to being a match and providing a ranked listbased on the closeness of those task performers. The system maysimilarly rank tasks for task performers (e.g., in response to asearch), such as to identify the tasks that are the closest match and/orthat possess other attributes of interest (e.g., having the highestreward) first. In addition, the system may in some embodiments attemptto identify external sources of qualification information and importadditional qualification information, such as to identify a match thatwas not initially known due to a lack of complete qualificationinformation.

In addition, while tasks may in some embodiments have associatedcategories and/or keywords that are supplied by task requesters, inother embodiments the electronic marketplace system automaticallycategorizes tasks and/or generates keywords for tasks based on analysisof information about the tasks, such as by analyzing similarities inattributes using data mining and other related analyses techniques. In asimilar manner, in some embodiments the electronic marketplace mayorganize related task performers and/or related task requesters intogroups based on similarities in qualifications and other attributes.Such organization and categorization of tasks, task performers and/ortask requesters assists users of the electronic marketplace inidentifying tasks and other parties of interest, such as other partieswith whom to work or with whom to avoid working.

As previously noted, in some embodiments each task may be a simplestand-alone activity for which a task performer receives a taskdescription (and optionally additional information to analyze) andprovides results of task performance. In other embodiments, however,some or all of the tasks may instead have multiple stages and/ormultiple related successive activities by the task performer, includinghaving multiple interactions (e.g., with the task requester, the TFFsystem and/or one or more other executing applications) during and/orbetween the stages or successive activities. In such embodiments,payment can be provided to a task performer in various ways, such asbased on completion of all stages/activities or instead based oncompletion of each of one or more intermediate stages/activities.

In addition, while in some embodiments each of the task performers maybe unrelated to (and even unknown to) other task performers, in otherembodiments multiple task performers may instead be affiliated orrelated to each other in various ways, such as by being part of a singleorganization, by working together (e.g., as a group) when performingsome or all tasks (e.g., to coordinate performance of related tasksand/or to share task-related knowledge), etc. In at least some suchembodiments, tasks may be submitted by one or more task requesters forperformance by a group of multiple task performers (e.g., by a specifiedgroup, by a group that has at least a minimum number of members and/orthat has at most a maximum number of members, by a group that has one ormore specified qualifications for the group, etc.), and/or a group ofmultiple task performers may accept one or more tasks for performance byone or more members of the group even if the task requesters had notspecified that those tasks were for performance by a group. In addition,when multiple users work together as a group, the group may in someembodiments by treated by the TFF system in a manner similar to a singleuser, such as to allow the group to be issued qualifications and/or tohave various types of associated information, as well as to in someembodiments automatically determined aggregate qualifications for agroup based on the individual qualifications of group members.

Similarly, while in some embodiments each of the task requesters may beunrelated to (and even unknown to) other task requesters, in otherembodiments multiple task requesters may instead be affiliated orrelated to each other in various ways, such as by being part of a singleorganization, by working together (e.g., as a group) for some or alltasks to be performed (e.g., to coordinate performance requests forrelated tasks, such as by identifying them as being related and/orspecifying criteria related to performance of a group of tasks), etc. Ina related manner, in some embodiments groups of tasks may be identifiedas being related (e.g., based on indications received from the taskrequesters for the tasks), such as to coordinate performance of thetasks in the group in various ways (e.g., by collecting or aggregatingperformance results for all of the tasks, by assigning them to one ormore task performers in a manner to facilitate the coordination of theperformance, etc.). In addition, in some embodiments task requestersand/or task performers may be recruited for participation in the systemin a variety of ways, including on the basis of existing groupmembership or other affinity information (e.g., to identify peoplelikely to have time to work as task performers, such as based on theirstatus as being potentially retired due to their membership in aseniors-oriented group).

In some embodiments, additional security mechanisms are further employedto restrict access to at least some information for at least some users.For example, some information about tasks may not be made available toat least some task performers, such as to hide information about theexistence of tasks or about certain task details from task performerswho are not qualified to perform the task, to whom the task is notassigned, or who otherwise meet criteria specified by a task requester.Furthermore, some information about a task may be made available to apotential task performer only when certain conditions are satisfied,such as completion of a non-disclosure agreement or satisfaction ofother specified criteria. Similarly, at least some information about thetask requesters and/or task performers may be hidden from at least someother task performers and/or task requesters, such as to shieldidentities of users (e.g., to provide partial or total anonymity betweena task requester who submits a task and a task performer who performsthe task, or to limit information about a task performer or taskrequester to potential competitors), or to limit access to informationabout quantitative measurements or other qualifications in order tominimize attempts by participants in the marketplace to artificialmanipulate rankings and other qualification information. In particular,in some embodiments at least some qualifications of task performers maybe private to the task performers and/or to task requesters who issuedthose qualifications to those task performers, such as to allow the taskrequesters to limit performance of their tasks to task performers in amanner that is not visible to other task performers who do not havethose qualifications.

In some embodiments, the system further attempts to providemeta-information about other information in the system (e.g., results oftask performance, appropriateness of a user's qualification,appropriateness of corroboration of a user's qualification, etc.), suchas to provide a confidence value to a task requester regarding a likelyappropriateness (e.g., accuracy, reliability, reproducibility, etc.) ofresults of task performance, to provide a confidence value to a userregarding a likely appropriateness (e.g., accuracy, reliability,reproducibility, etc.) of a qualification of a user (e.g., of a ratingvalue for the user for the qualification), to provide a confidence valueto a user regarding a likely appropriateness (e.g., accuracy,reliability, reproducibility, etc.) of corroboration of a qualificationof a user, etc. Such confidence values may be generated or otherwisedetermined in various ways for task results, such as based oninformation obtained from other task performers than those who providedthe results (e.g., by having multiple task performers perform a task andcomparing the results, by having more-qualified task performers reviewthe initially obtained task results, etc.), on comparison of the resultsto other results received for similar or related tasks, on automaticallyverifying whether the results satisfy criteria specified for the task,etc. Such confidence values may be generated or otherwise determined invarious ways for users' qualifications and for corroboration of users'qualifications, including based on information provided by or otherwiseassociated with those users and/or based on information provided by orotherwise associated with other users.

In some embodiments, the system further assists task requesters toobtain useful results in various ways, such as by providing insurance torecoup payments made for results that are not received or that turn outto be unsatisfactory, by providing an escrow service in which paymentsare held until they can be verified as satisfactory, by providing forappropriate contractual terms (e.g., binding arbitration) or othermechanisms to resolve disputes, etc. Some or all of thesefunctionalities may be provided for a fee in some embodiments, such as afee charged to the task requesters and/or to the task performersinvolved in a transaction benefiting from the functionality provided. Inaddition, in some embodiments the system attempts to improve itsperformance over time by learning preferences of task requesters and/ortask performers, such as by monitoring their activities and/or gatheringfeedback from them regarding prior activities.

The system and/or the described techniques can also be used in othermanners in some embodiments. As previously noted, the system may exportvarious information in some embodiments for use by other systems, suchas user qualification information and other types of user information.In addition, use of qualification information may be used for purposesof dating or other social or business networking in some embodiments,such as by submitting tasks having qualification criteria intended tomatch users whose qualifications satisfy the qualification criteria—inthis example, the task may be performed by identifying the one or moretask performers who satisfy the task's associated qualifications orother criteria. In a similar manner, users matching specified criteriacould similarly be found for other purposes in other embodiments, suchas to identify appropriate users for a research study, polling, opiniontaking, surveys, etc.

As previously noted, in some embodiments the TFF system assists inmanaging at least some types of interactions with users, such as toallow task requesters and/or task performers to specify how certaintypes of task-related interactions are to occur. In particular, in someembodiments task requesters are allowed to specify how interactions areto occur with task performers who are performing their tasks, and inparticular to specify one or more task interaction control (“TIC”) typesfor each of their submitted tasks. In at least some such embodiments,each TIC type is associated with a distinct combination of multipletypes of processing to be performed when presenting task-relatedinformation to a task performer and/or when obtaining results of thetask performance from the task performer. When the TFF system interactswith a task performer to manage the performance of a task having aspecified TIC type, the TFF system implements the combination ofprocessing types for the specified TIC type to control thoseinteractions.

In some embodiments, at least four types of user interaction processingmay be specified for each TIC type, including a specified manner ofmanipulating information associated with a task before it is provided toa task performer (e.g., to prepare the information to be presented tothe task performer), a specified manner of providing the manipulatedinformation to the task performer (e.g., to control the presentation ofthe manipulated task information to the task performer), a specifiedmanner of receiving or otherwise obtaining results of task performancefrom the task performer (e.g., to control how the task results arespecified by and sent by the task performer), and a specified manner ofmanipulating obtained task results before they are provided to the taskrequester (e.g., to prepare the information to be presented or otherwiseprovided to the task requester). In this manner, each of the types ofuser interaction processing may be specified independently of theothers, such as to transmit task information to a task performer using afirst data format and/or first transmission protocol and to receive taskresults from the task performer using a distinct second data formatand/or distinct second transmission protocol, and/or to have taskinformation specified in a first format and to have task resultsspecified in a different format.

In addition, in at least some embodiments each specified manner ofperforming one of the types of user interaction processing may beimplemented by a component containing executable information toimplement that specified manner of processing. For example, eachspecified manner of manipulating task information before it is providedto a task performer may be implemented by an appropriate taskinformation manipulation component, each specified manner of sendingmanipulated task information to a task performer may be implemented byan appropriate task information provider component, each specifiedmanner of receiving task results from a task performer may beimplemented by an appropriate task results receiver component, and eachspecified manner of manipulating received task results may beimplemented by an appropriate task results manipulation component.

Some illustrative examples of the user interaction processing type ofmanipulating task information before it is provided to a task performerinclude the following: using XSLT (“extensible Style LanguageTransformation”) to transform task data in XML format to HTML(“HyperText Markup Language”) format (e.g., for display to the taskperformer as a Web page formatted in a specific manner) or to anotherformat (e.g., a different XML format); wrapping task data that is in aformat presentable on the task performer's computing device (e.g., in“Flash” format to be presented by a Macromedia player on the taskperformer's computing device, or included as part of a Java appletexecutable on the task performer's computing device) in another format(e.g., HTML) for transmission to the task performer; encrypting the taskinformation before it is sent to the task performer (e.g., in a mannerso that it can be decrypted by the computing device of the taskperformer); modifying the form of the task information (e.g., to convertXML-based data to a chart/graph/table for presentation); manipulatingthe content of the task information (e.g., to transform text in onelanguage to another), whether in addition to or instead of manipulatingthe information format; and acting as a pass-through mechanism that doesnot modify the task information. The task information to be manipulatedcan also take a variety of forms, including text, numerical data, one ormore images, video data, audio information, etc.

Some illustrative examples of the user interaction processing type ofproviding task information to the task performer include the following:sending a Web page or other document type to the task performer fordisplay or other presentation by a Web browser or other appropriateapplication program on a computing device of the task performer (e.g.,using HTTP, WAP (or “Wireless Application Protocol”), SSL (or “SecureSockets Layer”), Secure HTTP, etc.); and sending executable code (e.g.,a Java applet) to the computing device of the task performer in a mannerto invoke an appropriate environment to execute the code (e.g., usingJNLP (or “Java Network Launching Protocol”) to execute a Java applet).In some embodiments, the user interaction processing type of providingtask information to the task performer may include selecting a protocolto be used in sending the task information and/or may include causing aparticular type of application on the task performer's computing deviceto receive and handle the task information (e.g., by causing thatprogram to be invoked).

Some illustrative examples of the user interaction processing type ofobtaining results of task performance from the task performer includethe following: receiving the task results via a provided Webservice-based interface that a program on the task performer's computingdevice invokes to send the task results; receiving the task results asCGI data (e.g., via HTTP GET and/or POST commands), such as from a formon a Web page displayed to the task performer; and receiving taskresults sent from an executing program on the task performer's computingdevice (e.g., a program invoked using a specified user interactionprocessing type of providing task information to the task performer),such as using a variety of communication techniques (e.g., CORBA, RPC,Java RMI (or “Remote Method Invocation”), by using ReST (or“REpresentational State Transfer”) to send XML data over HTTP, etc.).

Some illustrative examples of the user interaction processing type ofmanipulating obtained task results before they are provided to the taskrequester may include processing similar to that of manipulating taskinformation before it is provided to a task performer. In addition, themanipulating of obtained task results before they are provided to thetask requester may include the following: using XSD (“XML SchemaDefinition”) or DTD (“Document Type Definition”) to convert task resultsdata in CGI form to XML form; decrypting task results that wereencrypted at the computing device of the task performer; modifying theform of or manipulating the content of the task results in various ways;and acting as a pass-through mechanism that does not modify the taskresults.

In some embodiments, multiple alternatives are provided by the TFFsystem for each of the types of user interaction processing, such as byimplementing each alternative as a distinct component. Thus, forexample, the alternatives for the manipulation of task informationprocessing type may each be implemented by a corresponding taskinformation manipulation component, and may include one or more distinctcomponents that each have XSLT instructions for transforming data in XMLformat in a specified manner, a component including executableinformation to wrap task data in Flash format in an HTML wrapper, and apass-through component that provides as output the same task informationthat it receives as input. Similar alternatives may be provided by theTFF system for each of the user interaction processing types.

In addition, in some embodiments the TFF system provides one or morepredefined TIC types that are each associated with a distinctcombination of components that includes at least one component of eachof the user interaction processing types. In this manner, a taskrequester may specify a TIC type for a task being submitted by selectingone of the predefined TIC types. In addition, in some embodiments a taskrequester may specify multiple TIC types for a task (e.g., with the TICtypes using differing types of processing for providing manipulated taskinformation to a task performer), such as to allow task performers withcomputing devices having a greater variability of capabilities toperform the task. In addition, in some embodiments the TFF system mayfurther facilitate the performance of a task by automatically selectingone of multiple specified TIC types for a task for use by a taskperformer, such as based on known or identifiable capabilities of thecomputing device of the task performer.

In addition to selecting predefined TIC types, the TFF system in someembodiments further allows users to define their own TIC types, such asfor their own use and/or the user of other users. In some embodimentsthe TIC type definition may include the user selecting a predefinedcomponent for each of the user interaction processing types, while inother embodiments a user may further be allowed to supply his/her owncomponents for each of one or more of the user interaction processingtypes (e.g., components designed to handle data that is formatted in amanner specific to a task type created by the user). In addition, insome embodiments the user-supplied components may perform the userinteraction processing in different manners than those of predefinedalternatives (e.g., a user-supplied component that combines theprocessing of two or more of the user interaction processing types, suchas to both send task information to a task performer and receive taskresults information from the task performer) and/or may perform variousadditional types of processing. Moreover, while in some embodiments theselected components for a TIC type interoperate in a predefined serialmanner (with the task information manipulation component receiving theraw task data and sending the manipulated task information to the taskinformation providing component, and with the task results obtainingcomponent receiving the raw task results and sending them to the taskresults manipulation component), in other embodiments a user may beallowed to specify additional logic or relationships to define how thecomponents interoperate. In addition, in some embodiments the selectionof a component may depend on the components used before and/or after thecomponent being selected, and thus the types of components madeavailable to a user defining a new TIC type may vary based on selectionsalready made and/or information specific to the task.

For illustrative purposes, some embodiments are described below in whichspecific types of user interactions are managed in specific ways,including by using various specific types of task information processinginformation in specific ways. However, those skilled in the art willappreciate that the techniques of the invention can be used in a widevariety of other situations, including with other types of taskinformation processing and to manage other types of user interactions,and that the invention is not limited to the exemplary details provided.

FIGS. 12A-12J illustrate an example of using multiple user interactionprocessing types to manage interactions related to performance of atask. In particular, FIG. 12A illustrates an example task that issubmitted to the TFF and associated with a TIC type (not shown), withthe task information specified in XML format in this example. Inaddition, the task in this example includes a question of type“multi-choice” (as shown on line 2), which is a multiple-choice questionin which a task performer will select one of 5 specified images thatbest satisfies indicated conditions, in a manner similar to thatpreviously discussed with respect to FIG. 2A. In this example, the taskconditions are related to selecting an image best matching a specifiedsubject (as indicated by the text in line 4 of the task that will bepresented to the task performer), and the task includes indications of 5images of type “image/jpeg” on lines 6-35.

FIG. 12B shows an example of an XSD file that includes information thatcan be used by the TFF system or other entity to validate that taskshaving questions of type “multi-choice” are properly structured andinclude the appropriate data. For example, lines 30-35 of the file showthe allowed types and data elements used in the “Question” section ofthe task illustrated in FIG. 12A, and in particular show that the“Question” data element has child elements of “Title”, “Text” and“Choices” which have allowed types of “string”, “string” and“ChoicesType”, respectively. Other portions of the file provide otherrelated information, such as lines 23-29 that further define the“ChoicesType” data type.

FIGS. 12C-12G next illustrate an example of task informationmanipulation processing type information for use in preparing the taskinformation illustrated in FIG. 12A for presentation to a taskperformer, such as based on that task information manipulationprocessing type being specified for the TIC type associated with thetask. In this example embodiment, the task information manipulationprocessing type information is implemented as an XSLT component that canbe used to convert an XML input file to an output HTML file. Theinformation in the XSLT component may be used by an XSLT processorprogram to find particular statement patterns in the XML input file thatare then transformed in a specified manner in a new output file createdby the XSLT processor. For example, line 4 of FIG. 12C shows that inthis example the output file format will be HTML. Line 7 shows that theinput XML file statement to be matched is “/Question”, and lines 8-23show corresponding HTML tags to be included in the output file. Thefollowing lines illustrated in FIG. 12C and those in FIGS. 12D-12G thenillustrate how the task information from the task is manipulated to forman appropriate output HTML file to be presented to a task performer as aWeb page.

After the HTML output file is sent to a computing device of the taskperformer (e.g., by a manipulated task information provider processingcomponent, not shown, that sends the data using the HTTP protocol, suchas based on the manipulated task information provider processing typebeing specified for the TIC type associated with the task), FIG. 12Hillustrates the display of the HTML output file to the task presenter asa Web page, such as on a Web browser on the computing device of the taskperformer. In this example, the displayed Web page shows a question 1225posed to the task performer, with multiple user-selectable image choices1205 a-e displayed as possible answers to the question. In particular,in this example each of the choices 1205 includes a displayed image anda user-selectable radio button control 1215 that the task performer canselect. After the selection is made, which in this example is of Image4, the task performer clicks on the “Submit” button 1220 at the bottomof the screen to cause the results of the task performance to be sentback to the TFF system.

After the task results information is received at the TFF system (e.g.,by a processing component, not shown, that obtains task results byreceiving CGI data from the task performer, such as based on the taskresults obtainer processing type being specified for the TIC typeassociated with the task), FIG. 12I illustrates an example of taskresults manipulation processing type information for use in preparingthe task results to be provided to the task requester that submitted thetask, such as based on that task results manipulation processing typebeing specified for the TIC type associated with the task. Inparticular, in this example the processing information is implemented asanother XSLT file component that can be used to convert the task resultsfrom the task performer to XML format so that they can beprogrammatically provided to the task requester. For example, line 4shows that the output of the XSLT file will be “xml” data, line 5specifies that “/CGIData” is to be matched in the results information,and lines 6-11 specify that the value of the “@value” parameter for theselected image is to be written to the output XML file as the desireddata. FIG. 12J then illustrates the output XML file that results fromthe operation of the task results manipulation processing, with line 3showing that the answer selected by the task performer was labeled“Image4”.

FIG. 13 illustrates an example embodiment of the TFF system 130 similarto that previously discussed with respect to FIG. 1B, but withadditional modules to provide the described functionality related to theuse of TIC types. In particular, FIG. 1B included a User InteractionManager module 134 to assist in managing at least some types ofinteractions with users, and FIG. 13 includes three additional modules1343, 1344 and 1346 in the illustrated embodiment to providefunctionality related to the use of TIC types (e.g., as sub-modules ofor a specific implementation of the User Interaction Manager module). Inparticular, the TFF system 130 in the embodiment illustrated in FIG. 13includes a Task Interaction Controller module 1343, a TIC Type Definermodule 1344, and a Task Submission Receiver module 1346. Various of theother modules and information discussed with respect to FIG. 1B are notincluded in FIG. 13 for the sake of brevity, but may be included andinteract with the illustrated modules as appropriate in otherembodiments.

In the illustrated embodiment, the Task Submission Receiver modulereceives submissions of tasks from task requesters and associates one ormore TIC types with each of the submitted tasks, such as based on aspecification of the TIC type for a task by the task requestersubmitting the task. In situations in which the task requester submitsone or more tasks in an interactive manner, the Task Submission Receivermodule may assist the identification of an appropriate TIC type byproviding options for the TIC type to the task requester, such as basedon the type of task(s) and/or information associated with the taskrequester. The TIC type options may include predefined TIC types and/orTIC types previously defined by the task requester, and in someembodiments the Task Submission Receiver may further allow a taskrequester to define a new TIC type for use with a task being submitted,such as based on interactions with the TIC Type Definer module. In otherembodiments, the association of one or more TIC types with a task mayinstead be performed at times other than task submission, such as afterthe submission. After tasks are submitted and associated with one ormore TIC types, information about the associated TIC types is includedwith the other information about the task in the database 145. Duringperformance of the task, at least one of the associated TIC types willbe used to control the task performance, and the associated TIC typesmay further be used in some embodiments to assist in initially selectingappropriate task performers for the task (e.g., based on those taskperformers having capabilities to receive task information and providetask results in a manner consistent with the processing types specifiedfor the associated TIC types).

The Task Interaction Controller module in the illustrated embodimentcontrols the performance of tasks based on the TIC types associated withthe tasks. In particular, when a task is to be performed by a taskperformer, the Task Interaction Controller module selects one of the TICtypes associated with the task, and uses the types of informationprocessing specified for the TIC type to control the task performance.In the illustrated embodiment, definitions of predefined system-providedTIC types (if any) are included in the database 1351, and definitions ofuser-defined TIC types (if any) are included in the database 1352. Eachof the TIC type definitions specify multiple processing types to be usedwith the TIC type, and in some embodiments may specify logic orparameters to control how the multiple processing types interoperate. Insome embodiments, each of the processing types is associated with anassociated component or other grouping of processing information, withpredefined system-provided components (if any) stored in the illustratedembodiment in database 1353 and user-defined components (if any) storedin the illustrated embodiment in database 1354. Thus, to controlperformance of a task based on an associated TIC type, the TaskInteraction Controller module retrieves the TIC type definition fromdatabases 1351 or 1352, retrieves the components specified in the TICtype definition from databases 1353 and/or 1354, and executes thosecomponents in an appropriate manner to control the task performance. Anappropriate TIC type associated with a task can be selected by the TaskInteraction Controller module can be selected for use in various ways,such as based on the selected TIC type being the only TIC typeassociated with the task, on the selected TIC type being specified bythe task performer, on the selected TIC type being preferred or neededfor use with the computing device of the task performer based on thedevice's capabilities, etc.

The TIC Type Definer module in the illustrated embodiment allows users(e.g., task requesters) to define new TIC types for use in controllingtasks to be submitted, and may further in some embodiments allow usersto supply or otherwise define new components for use with a TIC typebeing defined (e.g., to process information specified in a format and/ortask type specific to a task requester, or to provide additionalcapabilities, such as to encrypt and decrypt information sent to andreceived from a task performer in a specified manner). In otherembodiments, users may not be allowed to define their own TIC types, andthus the TIC Type Definer module may not be present in thoseembodiments. The TIC type definition may be performed in various ways,such as by successively displaying or otherwise providing to a user eachof the available alternatives for each of a series of types ofinformation processing, such as based on predefined system-providedcomponents. In embodiments and situations in which dependencies existbetween different components or processing types, the module may furtherlimit the provided alternatives based on the prior selections. After anew TIC type is defined, the module stores the definition in thedatabase 1352, and further stores any user-supplied components in thedatabase 1354.

In other embodiments, some of the types of illustrated functionalityand/or information may not be provided, and other types of informationand/or functionality may be available. In addition, the illustratedfunctionality may be combined in more or fewer modules, and theillustrated types of information may be stored in other manners.

FIG. 9 is a flow diagram of an embodiment of a Task Submission Receiverroutine 900. The routine may, for example, be provided by execution ofan embodiment of the Task Submission Receiver module 1346 of FIG. 13,such as to receive task submissions and associate one or more TIC typeswith the tasks. In the illustrated embodiment, the routine interactswith a user in an interactive manner to associate a TIC type with atask, although in other embodiments a user may submit an indication of atask and of one or more TIC types in a non-interactive manner.

The routine begins at step 905, where an indication is received from atask requester to submit one or more new tasks. The routine determinesin step 910 whether to use one or more existing TIC types (e.g.,predefined system-provided TIC types), such as based on an indicationreceived from the task requester, and if so continues to step 920 todetermine available TIC types. Available TIC types may be determined invarious ways, such as based on all defined TIC types, TIC typesdetermined to be appropriate for the task and/or the user submitting thetask, etc. The routine then continues to step 925 to provided thedetermined TIC types to the task requester, and in step 930 obtains aselection from the task requester of one or more of the TIC types. If itwas instead determined in step 910 not to use an existing TIC type, theroutine continues instead to execute the TIC Type Definer routine instep 1000 to define one or more new TIC types, and in step 915 selectsthe newly defined TIC type(s) for use with the task being submitted.

After steps 930 or 915, the routine continues to step 935 to associatethe selected TIC type(s) with the task(s) being submitted, and continuesto step 940 to make the tasks available for performance (e.g., bystoring information about the tasks in an available tasks database). Theroutine then continues to step 995 to determine whether to continue. Ifso, the routine returns to step 905, and if not the routine continues tostep 999 and ends.

FIG. 10 is a flow diagram of an embodiment of a Task InteractionController Type Definer routine 1000. The routine may, for example, beprovided by execution of an embodiment of the TIC Type Definer module1344 of FIG. 13, such as to define new TIC types by users. In theillustrated embodiment, the routine interacts with a user in aninteractive manner to define a new TIC type, although in otherembodiments a user may instead submit a definition of one or more newTIC types in a non-interactive manner.

The routine begins at step 1005, where an indication is received from auser (e.g., a task requester) to define a new TIC type. The routinecontinues to step 1010 to identify the processing types to be used forthe TIC type being defined, such as based on a default set of processingtypes used for all TIC types or instead in another manner. The routinethen continues to step 1015 to select the next information processingtype to be specified for the new TIC type being defined, beginning withthe first. In step 1020 the routine then determines availablealternatives for the selected information processing type, such as allalternatives or instead in a manner based on other information from thenew TIC type (e.g., other alternatives already selected, the userdefining the new TIC type, etc.). The routine then continues to step1025 to present the available alternatives to the task requester alongwith an option to instead supply a new alternative implementation,although in other embodiments such user-supplied alternatives may not beused or may be specified by the task requester at other times or inother manners.

The routine then continues to step 1030 to receive a selection from thetask requester, and in step 1035 determines whether the task requesterselected one of the previously available alternatives. If not, theroutine continues to step 1040 to obtain an alternative implementationfrom the task requester (e.g., by receiving a component with executableinformation to implement the alternative) and selects it for use withthe new TIC type being defined, and in step 1050 stores the obtainedalternative for later user. After step 1050, or if it was insteaddetermined in step 1035 that the task requester selected an existingalternative, the routine continues to step 1045 to store an indicationof the selected alternative as being specified for the new TIC type. Theroutine then determines in step 1055 whether there are more informationprocessing types to specify for the new TIC type, and if so returns tostep 1015 to select the new information processing type to specify. Ifnot, the routine stores a definition of the new TIC type for later use,and then continues to step 1060 to optionally specify any receivedadditional information for the new TIC type (e.g., information about theconditions under which the TIC type may be used and who may use it).While not illustrated here, the routine may in some embodiments alsoreturn an indication to the task requester for the new defined TIC type,such as a unique identifier for later use in referencing the new TICtype. The routine then determines in step 1095 whether to continue. Ifso, the routine returns to step 1005, and if not continues to step 1099and ends.

FIG. 11 is a flow diagram of an embodiment of a Task InteractionController routine 1100. The routine may, for example, be provided byexecution of an embodiment of the Task Interaction Controller module1343 of FIG. 13, such as to control performance to tasks based on TICtypes associated with the tasks.

The routine begins at step 1105, where an indication is received of atask to be performed by a task performer, such as based on a request bythe task performer. The routine continues to step 1110 to retrieve taskinformation for the task, and in step 1115 determines a TIC type for usein controlling performance of the task, such as based on an associationof the TIC type with the task and/or a selection of the TIC type by thetask performer. The routine then continues to step 1120 to determinemultiple task information processing types specified for the determinedTIC type—in the illustrated embodiment, each TIC type specifies acomponent or other group of processing information for each of four taskinformation processing types, although in other embodiments othernumbers or types of processing types may instead be used.

In steps 1125-1140, the routine then performs each of the types ofprocessing specified for the determined TIC type. In step 1125, theroutine manipulates the retrieved task information in a specified mannerbased on a specified task information manipulation processing type forthe TIC type, and in step 1130 the routine provides the manipulated taskinformation to the task performer in a specified manner based on aspecified task information providing processing type for the TIC type.After the task performer performs the task, the routine receives theresults of the task performance in a specified manner in step 1135 basedon a specified task results receiver processing type for the TIC type,and in step 1140 manipulates the received task results in a specifiedmanner based on a task results manipulation processing type for the TICtype. While the illustrated embodiment indicates a synchronous flow inwhich the routine waits for and obtains task results after sending thetask information, in other embodiments the routine could be structuredin other manners, such as to continue with other processing whilewaiting for task results (if any) to be sent. In addition, in somesituations task performers may not provide task results for a task afterthey accept an assignment to perform the task, which may be indicated tothe routine in an explicit message from the task performer to withdrawfrom task performance or instead by not receiving task results within aspecified period of time, and if so the routine would continue to handleother task-related requests and information.

After step 1140, the routine continues to step 1145 to provide themanipulated task results to the task requester in a specified manner,although in other embodiments the task results may instead be storeduntil the task requester proactively retrieves them. After step 1145,the routine continues to step 1195 to determine whether to continue. Ifso, the routine returns to step 1105, and if not continues to step 1199and ends.

While the use of TIC types and associated use of various types ofinformation processing have been described in conjunction with the TFFsystem, those skilled in the art will appreciate that these techniquesmay similarly be used in variety of other situations, including in othertypes of systems in which questions are provided and answers aregathered, or more generally in which information is provided andreceived. In addition, in some embodiments and situations only some ofthe illustrated types of information processing may be used, such as touse processing for providing information or for receiving informationbut not for both. Accordingly, TIC types can be used in a variety ofother embodiments.

Those skilled in the art will also appreciate that in some embodimentsthe functionality provided by the routines discussed above may beprovided in alternative ways, such as being split among more routines orconsolidated into fewer routines. Similarly, in some embodimentsillustrated routines may provide more or less functionality than isdescribed, such as when other illustrated routines instead lack orinclude such functionality respectively, or when the amount offunctionality that is provided is altered. In addition, while variousoperations may be illustrated as being performed in a particular manner(e.g., in serial or in parallel) and/or in a particular order, thoseskilled in the art will appreciate that in other embodiments theoperations may be performed in other orders and in other manners. Thoseskilled in the art will also appreciate that the data structuresdiscussed above may be structured in different manners, such as byhaving a single data structure split into multiple data structures or byhaving multiple data structures consolidated into a single datastructure. Similarly, in some embodiments illustrated data structuresmay store more or less information than is described, such as when otherillustrated data structures instead lack or include such informationrespectively, or when the amount or types of information that is storedis altered.

From the foregoing it will be appreciated that, although specificembodiments have been described herein for purposes of illustration,various modifications may be made without deviating from the spirit andscope of the invention. Accordingly, the invention is not limited exceptas by the appended claims and the elements recited therein. In addition,while certain aspects of the invention are presented below in certainclaim forms, the inventors contemplate the various aspects of theinvention in any available claim form. For example, while only someaspects of the invention may currently be recited as being embodied in acomputer-readable medium, other aspects may likewise be so embodied.

1. A method in a computing system for providing an electronicmarketplace that acts as an intermediary to facilitate purchasing andselling human-generated answers to questions, the method comprising: foreach of multiple users unaffiliated with the electronic marketplace,receiving information from the user regarding availability of the userto act as a human task performer, the received information includingcurrent qualifications of the user related to performing tasks, andregistering the user at the electronic marketplace as an available humantask performer; in response to each of multiple tasks submissions thatare each received from an application program of a task requester via aprogrammatic interface of the electronic marketplace to make a submittedtask available for performance by human task performers unrelated to thetask requester, registering the submitted task at the electronicmarketplace as being available, each task submission specifying anassociated fee and associated qualifications and associated taskperformance criteria for the task such that the fee is to be paid to ahuman task performer who has the qualifications and who satisfactorilyperforms the task by answering a specified question for the task in sucha manner as to satisfy the criteria; and for each of at least some ofthe registered tasks, providing information about the task to one ormore human task performers, the provided information including thespecified question for the task; receiving an answer generated by ahuman task performer for the specified question of the task; and whenthe human task performer who generated the answer has currentqualifications matching the associated qualifications for the task andwhen the associated criteria for the task are satisfied, providing thereceived answer via the programmatic interface to the applicationprogram that submitted the task and providing the associated fee for thetask to the task performer, so that application programs canprogrammatically purchase answers to questions that are provided byhuman task performers.
 2. The method of claim 1 wherein the programmaticinterface of the electronic marketplace is an application programminginterface that includes one or more Web services, and wherein eachsubmission of a task from an application program is based on aninvocation by the application program of one of the Web services.
 3. Themethod of claim 2 wherein each providing of a received answer for asubmitted task to an application program is provided as a response tothe invocation by the application program that submitted the task
 4. Themethod of claim 1 wherein each providing of information about a task toa human task performer is performed in response to a request from thehuman task performer for information about one or more tasks that thehuman task performer is qualified to perform.
 5. The method of claim 1wherein each providing of information about a task to a human taskperformer is performed automatically after the registering of the taskand after automatically identifying the human task performer as beingqualified to perform the task.
 6. The method of claim 1 wherein at leastsome of the registered tasks are all of a single task type, and whereinthe providing of information for those tasks to one or more human taskperformers is performed so as to repeatedly provide information aboutavailable tasks of that task type to a selected task performer so thatthe selected task performer can perform those tasks.
 7. The method ofclaim 1 wherein at least some of the registered tasks are provided abasic level of service by the electronic marketplace and at least someother of the registered tasks are provided a concierge level of serviceby the electronic marketplace that exceeds the basic level of service,and wherein each providing of information to one or more human taskperformers about a task that is provided the concierge level of serviceis performed automatically in such a manner as to identify at least onetask performer who will answer the specified question for the task insuch a manner as to satisfy the associated task performance criteria forthe task.
 8. The method of claim 1 wherein each task submission furtherincludes supplied information that is associated with the task beingsubmitted, and wherein the answering of the specified question for eachof the registered tasks involves a human task performer providing ahuman judgment regarding a subjective aspect of the supplied associatedinformation for the task.
 9. The method of claim 1 wherein the providingof associated fees to task performers for tasks submitted by taskrequesters includes obtaining the fees from the task requesters onbehalf of the task performers.
 10. The method of claim 1 wherein theassociated qualifications for a human task performer to perform each ofat least some of the registered tasks include one or more qualificationsbased on quantitative measurements by the electronic marketplace of pastperformance of the task performer, one or more qualifications based onassertions of the task performer, one or more qualifications based onratings of the task performer provided by task requesters, and one ormore qualifications based on credentials of the task performer suppliedby one or more third-party qualification authorities. 11-59. (canceled)60. A computer-readable medium whose contents enable a computing deviceto act as an intermediary to facilitate performance by task performersof tasks submitted by task requesters, by performing a methodcomprising: receiving information from an executing program of a taskrequester about a task that is available to be performed, theinformation received via a defined programmatic application programinterface and indicating one or more criteria for satisfactoryperformance of the task; providing information about the task to one ormore human task performers who are able to satisfactorily perform thetask based on the indicated criteria; and after receiving results forthe available task based on performance of the task by one or more ofthe human task performers to whom the information about the task wasprovided, supplying the received results via the defined programmaticinterface to a program of the task requester.
 61. The computer-readablemedium of claim 60 wherein the available task has associatedcompensation for satisfactory performance of the task, and includingproviding at least a portion of the associated compensation to a humantask performer who performs the task.
 62. The computer-readable mediumof claim 60 wherein the indicated criteria for the available taskinclude one or more associated required qualifications of a humanperformer of the task, and wherein the one or more human task performerswho are able to satisfactorily perform the task based on the indicatedcriteria are each identified as having associated qualifications thatsatisfy the required qualifications.
 63. The computer-readable medium ofclaim 60 wherein the computing device provides an electronic marketplaceto which multiple task requesters submit available tasks to be performedand to which multiple task performers provide results from performanceof available tasks.
 64. The computer-readable medium of claim 60 whereinthe available task is a qualifying examination such that a human taskperformer who performed the task receives an associated qualificationthat allows that human task performer to perform other tasks.
 65. Thecomputer-readable medium of claim 60 wherein the receiving ofinformation about the available task from an executing program of a taskrequester is based on submission by the task requester of a new taskthat is distinct from any existing available tasks.
 66. Thecomputer-readable medium of claim 60 wherein the computer-readablemedium is a memory of a computing device.
 67. (canceled)
 68. Thecomputer-readable medium of claim 60 wherein the contents areinstructions that when executed cause the computing device to performthe method.
 69. The computer-readable medium of claim 60 wherein thecontents include a data structure for use in facilitating performance oftasks, the data structure comprising multiple entries that eachcorrespond to a task and that each contain indications of at least onequalification of a human task performer for the task and of associatedcompensation for performance of the task.
 70. The computer-readablemedium of claim 69 wherein at least some of the entries of the datastructure each further contain one or more additional indicationsrelated to the task for the entry, the additional indications for theentry including at least one of one or more task requesters who providedthe task, one or more task performers who performed the task, a callbackmechanism via which to provide results of performance of the task to aprogram of a task requester, one or more pieces of information for useby a task performer during performance of the task, and one or morepieces of information related to corroboration of one or more of theindicated qualifications for the task. 71-76. (canceled)
 77. A methodfor a computing device of a task requester to use an electronicmarketplace of human performance tasks to facilitate performance ofavailable tasks by human task performers, the electronic marketplacehaving a programmatic interface, the method comprising: providinginformation to the electronic marketplace via the programmatic interfaceabout one or more tasks of a task requester that are available to beperformed, the provided information for each of the available tasksindicating one or more required qualifications of a human performer ofthe task and including associated compensation for satisfactoryperformance of the task; for each of at least some of the availabletasks, after results for the available task are generated fromperformance of the task by one or more human task performers, receivingthe results for the task via the programmatic interface; and when thereceived results for a task are determined to be satisfactory, causingthe associated compensation for the task to be provided to one or moreof those human task performers.
 78. The method of claim 77 whereinproviding of information to the electronic marketplace about one or moretasks that are available to be performed is performed repeatedly, so asto provide information about a plurality of available tasks.
 79. Themethod of claim 78 wherein the plurality of available tasks are all of asingle task type.
 80. The method of claim 78 wherein the plurality ofavailable tasks are a group of related tasks that are providedincrementally.
 81. The method of claim 77 wherein the method furthercomprises providing payment from the task requester corresponding to theassociated compensation.
 82. The method of claim 77 wherein each of theone or more tasks includes answering a question specified for the task.83. The method of claim 77 wherein each of the one or more tasksincludes at least one of a human task performer providing a humanjudgment regarding a subjective aspect of the task, and of a human taskperformer performing discernment regarding information supplied for thetask.
 84. The method of claim 77 wherein the one or more requiredqualifications of the human task performers of at least one of the oneor more tasks include a plurality of qualifications based on multiple ofquantitative measurements by the electronic marketplace of pastperformance of the human task performers, of qualifications based onassertions of the human task performers, of qualifications based onratings of the human task performers provided by task requesters, and ofqualifications based on credentials of the human task performerssupplied by one or more third-party qualification authorities.
 85. Themethod of claim 77 wherein the programmatic interface of the electronicmarketplace is an application programming interface that includes one ormore Web services, and wherein the providing of the information aboutthe one or more tasks is performed by an executing program of the taskrequester based on an invocation of at least one of the Web services.86. The method of claim 77 wherein the task requester is a first user,and wherein the method further comprises, before the providing of theinformation to the electronic marketplace about the one or more tasks,providing information to the electronic marketplace for use inregistering the first user to act as a task requester.
 87. The method ofclaim 86 wherein the method further comprises receiving at theelectronic marketplace the provided information for use in registeringthe first user to act as a task requester, and registering the firstuser at the electronic marketplace as being available to act as a taskrequester to submit tasks to be performed.
 88. The method of claim 86wherein the providing of the information for use in registering thefirst user to act as a task requester is performed via the programmaticinterface of the electronic marketplace.
 89. A computing systemconfigured to act as an intermediary to facilitate performance by taskperformers of tasks submitted by task requesters, comprising: one ormore processors; and a task fulfillment facilitator system configuredto, when executed by at least one of the one or more processors,facilitate performance of multiple tasks by, for each of the tasks:receiving information from an executing program of a task requesterabout the task available to be performed, the information received via adefined programmatic application program interface and indicating one ormore criteria for satisfactory performance of the task; providinginformation about the task to one or more human task performers who arequalified to satisfactorily perform the task based on the indicatedcriteria; and after receiving results based on performance of theavailable task by one or more of the human task performers to whom theinformation about the task was provided, supplying the received resultsvia the defined programmatic interface to a program of the taskrequester.
 90. The computing system of claim 89 wherein, for one of themultiple tasks, the one task has associated compensation forsatisfactory performance of the one task, and wherein the facilitatingof the performance of the multiple tasks by the task fulfillmentfacilitator system includes providing at least a portion of theassociated compensation to a human task performer who performs the onetask.
 91. The computing system of claim 89 wherein, for one of themultiple tasks, the indicated criteria for the one task include one ormore associated required qualifications of a human performer of the onetask, and wherein the one or more human task performers to whom theinformation about the one task is provided are each automaticallyidentified by the task fulfillment facilitator system as havingassociated qualifications that satisfy the required qualifications. 92.The computing system of claim 89 wherein the task fulfillmentfacilitator system provides an electronic marketplace to which multipletask requesters submit available tasks to be performed and to whichmultiple human task performers unrelated to task requesters provideresults from performance of tasks submitted by those task requesters.93. The computing system of claim 89 wherein, for one of the multipletasks, the one task is a qualifying examination such that a human taskperformer who performs the one task receives an associated qualificationthat allows that human task performer to perform other tasks.
 94. Thecomputing system of claim 89 wherein, for one of the multiple tasks, thereceiving of information about the one task from the executing programof the task requester is based on submission by the task requester of anew task that is distinct from any existing available tasks.
 95. Thecomputing system of claim 89 further comprising the applicationprogramming interface, the application programming interface beingprovided by the task fulfillment facilitator system and being configuredto allow executing programs of task requesters to submit tasks availableto be performed and to allow the executing programs to receiveinformation about results of performance of submitted tasks.
 96. Thecomputing system of 95 further comprising storage configured to storeinformation about each of the submitted tasks that includes anassociated reward for satisfactory performance of the task andassociated criteria for satisfactory performance of the task.
 97. Thecomputing system of claim 89 wherein the task fulfillment facilitatorsystem is further configured to receive information from each ofmultiple users that includes information about qualifications of theuser to act as a human task performer, and to register each of themultiple users as being available to act as a human task performer toperform available tasks.
 98. The computing system of claim 89 whereinthe task fulfillment facilitator system includes software instructionsfor execution by the at least one processors.
 99. The computing systemof claim 89 wherein the task fulfillment facilitator system consists ofa means for facilitating performance of multiple tasks by, for each ofthe tasks: receiving information from an executing program of a taskrequester about a task that is available to be performed, theinformation received via a defined programmatic application programinterface and indicating one or more criteria for satisfactoryperformance of the task; providing information about the task to one ormore human task performers who are qualified to satisfactorily performthe task based on the indicated criteria; and after receiving resultsbased on performance of the available task by one or more of the humantask performers to whom the information about the task was provided,supplying the received results via the defined programmatic interface toa program of the task requester.